diff --git a/workflow/engine/classes/Cases.php b/workflow/engine/classes/Cases.php
index c2c939581..3f51ae6ca 100644
--- a/workflow/engine/classes/Cases.php
+++ b/workflow/engine/classes/Cases.php
@@ -3379,7 +3379,6 @@ class Cases
     public function executeTriggers($sTasUid, $sStepType, $sStepUidObj, $sTriggerType, $aFields = array())
     {
         ChangeLog::getChangeLog()
-                ->setStepTypeObject($sStepType)
                 ->setObjectUid($sStepUidObj)
                 ->getExecutedAtIdByTriggerType($sTriggerType);
 
diff --git a/workflow/engine/classes/WsBase.php b/workflow/engine/classes/WsBase.php
index e8a3c9d64..7924d8120 100644
--- a/workflow/engine/classes/WsBase.php
+++ b/workflow/engine/classes/WsBase.php
@@ -2249,7 +2249,7 @@ class WsBase
                     unset($appFields['APP_PROC_STATUS']);
                     unset($appFields['APP_PROC_CODE']);
                     unset($appFields['APP_PIN']);
-                    $fieldsUpdated = $oCase->updateCase($caseId, $appFields);
+                    $oCase->updateCase($caseId, $appFields);
 
                     //We need to update the variable $appData for use the new variables in the next trigger
                     $appData = array_merge($appData, $appFields['APP_DATA']);
@@ -2258,15 +2258,14 @@ class WsBase
         }
 
         ChangeLog::getChangeLog()
-                ->setDate($fieldsUpdated['APP_UPDATE_DATE'])
-                ->setAppNumber($fieldsUpdated['APP_NUMBER'])
-                ->setDelIndex($fieldsUpdated['DEL_INDEX'])
+                ->setDate('now')
+                ->setAppNumber($appData['APP_NUMBER'])
+                ->setDelIndex($appData['INDEX'])
                 ->getProIdByProUid($appData['PROCESS'])
                 ->getTasIdByTasUid($appData['TASK'])
-                ->setStepTypeObject($stepType)
-                ->setObjectUid($stepUidObj)
-                ->setData($fieldsUpdated['APP_DATA'])
-                ->getExecutedAtIdByTriggerType($triggerType);
+                ->setData(serialize($appData))
+                ->getExecutedAtIdByTriggerType($triggerType)
+                ->getObjectIdByUidAndObjType($stepUidObj, $stepType);
 
         return $varTriggers;
     }
diff --git a/workflow/engine/methods/cases/ajaxListener.php b/workflow/engine/methods/cases/ajaxListener.php
index 3930f76a6..70083e7c0 100644
--- a/workflow/engine/methods/cases/ajaxListener.php
+++ b/workflow/engine/methods/cases/ajaxListener.php
@@ -1,6 +1,7 @@
 <?php
 
 use ProcessMaker\BusinessModel\Cases as BmCases;
+use ProcessMaker\ChangeLog\ChangeLogResult;
 use ProcessMaker\Plugins\PluginRegistry;
 
 if (!isset($_SESSION['USER_LOGGED'])) {
@@ -770,15 +771,19 @@ class Ajax
 
     public function changeLogAjax()
     {
-        $changeLog = new ProcessMaker\BusinessModel\Cases\ChangeLog();
         $idHistory = $_REQUEST["idHistory"];
         $idHistoryArray = explode("_", $idHistory);
         $proUid = $idHistoryArray[0];
         $appUid = $idHistoryArray[1];
         $tasUid = $idHistoryArray[2];
-        $start = isset($_REQUEST['start']) ? (int) $_REQUEST['start']: 0;
-        $limit = isset($_REQUEST['limit']) ? (int) $_REQUEST['limit']: 15;
-        echo G::json_encode($changeLog->getChangeLog($appUid, $proUid, $tasUid, $start, $limit));
+
+        $changeLog = new ChangeLogResult();
+        $result = $changeLog->setAppUid($appUid)
+                ->setUserLogged($_SESSION['USER_LOGGED'])
+                ->setProUid($proUid)
+                ->setTasUid($tasUid)
+                ->getLogs();
+        echo json_encode($result);
     }
 
     public function changeLogTab()
diff --git a/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLog.php b/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLog.php
index 9ba247a6e..2620a6c97 100644
--- a/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLog.php
+++ b/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLog.php
@@ -37,7 +37,7 @@ class ChangeLog
      * 
      * @var array 
      */
-    protected static $applications = ['unknow', 'web', 'ABE', 'mobile'];
+    protected static $applications = ['Unknow', 'Web', 'Actions by Email', 'Mobile'];
 
     /**
      * Identifier for unknow object.
@@ -195,7 +195,7 @@ class ChangeLog
      * 
      * @var string 
      */
-    protected $objectUid = '';
+    protected $objectUid = '0';
 
     /**
      * The value for the executedAt field.
@@ -232,13 +232,6 @@ class ChangeLog
      */
     protected $language = '';
 
-    /**
-     * The value for the stepTypeObject field.
-     * 
-     * @var string
-     */
-    protected $stepTypeObject = '';
-
     /**
      * Constructor of de class.
      */
@@ -252,7 +245,7 @@ class ChangeLog
      * 
      * @return datetime
      */
-    function getDate()
+    public function getDate()
     {
         return $this->date;
     }
@@ -262,7 +255,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getAppNumber()
+    public function getAppNumber()
     {
         return $this->appNumber;
     }
@@ -272,7 +265,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getDelIndex()
+    public function getDelIndex()
     {
         return $this->delIndex;
     }
@@ -282,7 +275,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getProId()
+    public function getProId()
     {
         return $this->proId;
     }
@@ -292,7 +285,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getTasId()
+    public function getTasId()
     {
         return $this->tasId;
     }
@@ -302,7 +295,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getUsrId()
+    public function getUsrId()
     {
         return $this->usrId;
     }
@@ -312,7 +305,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getObjectType()
+    public function getObjectType()
     {
         return $this->objectType;
     }
@@ -322,7 +315,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getObjectId()
+    public function getObjectId()
     {
         return $this->objectId;
     }
@@ -332,7 +325,7 @@ class ChangeLog
      * 
      * @return type
      */
-    function getObjectUid()
+    public function getObjectUid()
     {
         return $this->objectUid;
     }
@@ -342,7 +335,7 @@ class ChangeLog
      * 
      * @return int
      */
-    function getExecutedAt()
+    public function getExecutedAt()
     {
         return $this->executedAt;
     }
@@ -352,7 +345,7 @@ class ChangeLog
      * 
      * @return string
      */
-    function getSourceId()
+    public function getSourceId()
     {
         return $this->sourceId;
     }
@@ -362,7 +355,7 @@ class ChangeLog
      * 
      * @return array
      */
-    function getData()
+    public function getData()
     {
         return $this->data;
     }
@@ -372,7 +365,7 @@ class ChangeLog
      * 
      * @return string
      */
-    function getSkin()
+    public function getSkin()
     {
         return $this->skin;
     }
@@ -382,27 +375,18 @@ class ChangeLog
      * 
      * @return string
      */
-    function getLanguage()
+    public function getLanguage()
     {
         return $this->language;
     }
 
-    /**
-     * Get stepTypeObject.
-     * @return string
-     */
-    function getStepTypeObject()
-    {
-        return $this->stepTypeObject;
-    }
-
     /**
      * Set date.
      * 
      * @param datetime $date
      * @return $this
      */
-    function setDate($date)
+    public function setDate($date)
     {
         $this->date = $date;
         return $this;
@@ -414,7 +398,7 @@ class ChangeLog
      * @param int $appNumber
      * @return $this
      */
-    function setAppNumber($appNumber)
+    public function setAppNumber($appNumber)
     {
         $this->appNumber = $appNumber;
         return $this;
@@ -426,7 +410,7 @@ class ChangeLog
      * @param int $delIndex
      * @return $this
      */
-    function setDelIndex($delIndex)
+    public function setDelIndex($delIndex)
     {
         $this->delIndex = $delIndex;
         return $this;
@@ -438,7 +422,7 @@ class ChangeLog
      * @param int $proId
      * @return $this
      */
-    function setProId($proId)
+    public function setProId($proId)
     {
         $this->proId = $proId;
         return $this;
@@ -450,7 +434,7 @@ class ChangeLog
      * @param int $tasId
      * @return $this
      */
-    function setTasId($tasId)
+    public function setTasId($tasId)
     {
         $this->tasId = $tasId;
         return $this;
@@ -462,7 +446,7 @@ class ChangeLog
      * @param int $usrId
      * @return $this
      */
-    function setUsrId($usrId)
+    public function setUsrId($usrId)
     {
         $this->usrId = $usrId;
         return $this;
@@ -474,7 +458,7 @@ class ChangeLog
      * @param int $objectType
      * @return $this
      */
-    function setObjectType($objectType)
+    public function setObjectType($objectType)
     {
         $this->objectType = $objectType;
         return $this;
@@ -486,7 +470,7 @@ class ChangeLog
      * @param int $objectId
      * @return $this
      */
-    function setObjectId($objectId)
+    public function setObjectId($objectId)
     {
         $this->objectId = $objectId;
         return $this;
@@ -498,7 +482,7 @@ class ChangeLog
      * @param string $objectUid
      * @return $this
      */
-    function setObjectUid($objectUid)
+    public function setObjectUid($objectUid)
     {
         $this->objectUid = $objectUid;
         return $this;
@@ -510,7 +494,7 @@ class ChangeLog
      * @param int $executedAt
      * @return $this
      */
-    function setExecutedAt($executedAt)
+    public function setExecutedAt($executedAt)
     {
         $this->executedAt = $executedAt;
         return $this;
@@ -522,7 +506,7 @@ class ChangeLog
      * @param string $sourceId
      * @return $this
      */
-    function setSourceId($sourceId)
+    public function setSourceId($sourceId)
     {
         $this->sourceId = $sourceId;
         return $this;
@@ -534,7 +518,7 @@ class ChangeLog
      * @param string $data
      * @return $this
      */
-    function setData($data)
+    public function setData($data)
     {
         $this->data = $data;
         return $this;
@@ -546,7 +530,7 @@ class ChangeLog
      * @param string $skin
      * @return $this
      */
-    function setSkin($skin)
+    public function setSkin($skin)
     {
         $this->skin = $skin;
         return $this;
@@ -558,24 +542,12 @@ class ChangeLog
      * @param string $language
      * @return $this
      */
-    function setLanguage($language)
+    public function setLanguage($language)
     {
         $this->language = $language;
         return $this;
     }
 
-    /**
-     * Set stepTypeObject.
-     * 
-     * @param string $stepTypeObject
-     * @return $this
-     */
-    function setStepTypeObject($stepTypeObject)
-    {
-        $this->stepTypeObject = $stepTypeObject;
-        return $this;
-    }
-
     /**
      * Registers an entry in the database with all the data established in the 
      * object at that moment.
@@ -744,6 +716,9 @@ class ChangeLog
                 break;
         }
         switch ($uid) {
+            case "":
+                $this->setObjectUid(0);
+                break;
             case "-1":
                 $this->setObjectUid(0);
                 $this->setExecutedAt(self::BEFORE_ASSIGNMENT);
diff --git a/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLogResult.php b/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLogResult.php
new file mode 100644
index 000000000..d89354c75
--- /dev/null
+++ b/workflow/engine/src/ProcessMaker/ChangeLog/ChangeLogResult.php
@@ -0,0 +1,294 @@
+<?php
+
+namespace ProcessMaker\ChangeLog;
+
+use Cases;
+use G;
+use ProcessMaker\ChangeLog\LogStruct;
+use Propel;
+
+class ChangeLogResult
+{
+    /**
+     * Reserved steps.
+     * 
+     * @var array
+     */
+    private $reservedSteps = [
+        -1,
+        -2,
+    ];
+
+    /**
+     * Variables to exclude.
+     * 
+     * @var array
+     */
+    private $excludeVariables = [
+        'SYS_LANG',
+        'SYS_SKIN',
+        'SYS_SYS',
+        'APPLICATION',
+        'PROCESS',
+        'TASK',
+        'INDEX',
+        'USER_LOGGED',
+        'USR_USERNAME',
+        'APP_NUMBER',
+        'PIN',
+        'DYN_CONTENT_HISTORY',
+        '__VAR_CHANGED__',
+    ];
+
+    /**
+     * Permissions.
+     * 
+     * @var array
+     */
+    private $permissions = [];
+
+    /**
+     * Identifier of the application.
+     * 
+     * @var string
+     */
+    private $appUid;
+
+    /**
+     * Identifier of the process.
+     * 
+     * @var string
+     */
+    private $proUid;
+
+    /**
+     * Identifier of the task.
+     * 
+     * @var string
+     */
+    private $tasUid;
+
+    /**
+     * User logged.
+     *
+     * @var string
+     */
+    private $userLogged;
+
+    /**
+     * Set appUid.
+     * 
+     * @param string $appUid
+     * @return object
+     */
+    public function setAppUid($appUid)
+    {
+        $this->appUid = $appUid;
+        return $this;
+    }
+
+    /**
+     * Set proUid.
+     * 
+     * @param string $proUid
+     * @return object
+     */
+    public function setProUid($proUid)
+    {
+        $this->proUid = $proUid;
+        return $this;
+    }
+
+    /**
+     * Set tasUid.
+     * 
+     * @param string $tasUid
+     * @return object
+     */
+    public function setTasUid($tasUid)
+    {
+        $this->tasUid = $tasUid;
+        return $this;
+    }
+
+    /**
+     * Set userLogged.
+     * 
+     * @param string $userLogged
+     * @return object
+     */
+    public function setUserLogged($userLogged)
+    {
+        $this->userLogged = $userLogged;
+        return $this;
+    }
+
+    /**
+     * Get logs.
+     * 
+     * @return array
+     */
+    public function getLogs()
+    {
+        $cases = new Cases();
+        $this->permissions = $cases->getAllObjects($this->proUid, $this->appUid, $this->tasUid, $this->userLogged);
+
+        $logs = [];
+        $totalCount = 0;
+        $values = [];
+
+        $this->getLogsFromDataBase($this->appUid, function($row) use(&$logs, &$totalCount, &$values) {
+            $appData = $this->getAppData($row['DATA']);
+            $this->removeVariables($appData);
+
+            $hasPermission = $this->hasPermission($row['DYN_UID']);
+            if ((int) $row['SOURCE_ID'] === ChangeLog::FromABE) {
+                $hasPermission = true;
+            }
+
+            $count = 0;
+            foreach ($appData as $key => $value) {
+                if ($hasPermission && (!isset($values[$key]) || $values[$key] !== $value)) {
+
+                    $previousValue = !isset($values[$key]) ? null : $values[$key];
+                    $record = ''
+                            . G::LoadTranslation('ID_TASK') . ': ' . $row['TAS_TITLE'] . ' / '
+                            . G::LoadTranslation('ID_DYNAFORM') . ': ' . $row['DYN_TITLE'] . ' / '
+                            . G::LoadTranslation('ID_LAN_UPDATE_DATE') . ': ' . $row['DATE'] . ' / '
+                            . G::LoadTranslation('ID_USER') . ': ' . $row['USR_USERNAME'] . ' / '
+                            . G::LoadTranslation('ID_FROM') . ': ' . ChangeLog::getChangeLog()->getApplicationNameById($row['SOURCE_ID']);
+
+                    $struct = new LogStruct();
+                    $struct->setField($key)
+                            ->setPreviousValue($this->toString($previousValue))
+                            ->setCurrentValue($this->toString($value))
+                            ->setPreviousValueType(gettype($previousValue))
+                            ->setCurrentValueType(gettype($value))
+                            ->setRecord($record);
+
+                    $logs[] = $struct->getValues();
+                    $count++;
+                }
+                $values[$key] = $value;
+            }
+            $totalCount = $totalCount + $count;
+        });
+
+        return [
+            'data' => $logs,
+            'totalCount' => $totalCount
+        ];
+    }
+
+    /**
+     * Get logs from Database.
+     * 
+     * @param type $appUid
+     * @param type $callback
+     */
+    public function getLogsFromDataBase($appUid, $callback = null)
+    {
+        $conn = Propel::getConnection('workflow');
+        $sql = ""
+                . "SELECT "
+                . "A.CHANGE_LOG_ID, "
+                . "D.TAS_TITLE, "
+                . "C.PRO_TITLE,  "
+                . "IF(F.DYN_UID IS NULL,'N/A',F.DYN_TITLE) AS 'DYN_TITLE', "
+                . "F.DYN_UID, "
+                . "A.DATE,  "
+                . "E.USR_USERNAME, "
+                . "A.APP_NUMBER, "
+                . "A.DEL_INDEX, "
+                . "A.PRO_ID, "
+                . "A.TAS_ID, "
+                . "A.USR_ID, "
+                . "A.OBJECT_ID, "
+                . "A.OBJECT_UID, "
+                . "A.EXECUTED_AT, "
+                . "A.SOURCE_ID, "
+                . "A.DATA, "
+                . "A.SKIN, "
+                . "A.LANGUAGE "
+                . "FROM APP_DATA_CHANGE_LOG AS A "
+                . "INNER JOIN APPLICATION AS B ON (B.APP_NUMBER=A.APP_NUMBER AND B.APP_UID=? ) "
+                . "LEFT JOIN PROCESS AS C ON (C.PRO_ID=A.PRO_ID) "
+                . "LEFT JOIN TASK AS D ON (D.TAS_ID=A.TAS_ID) "
+                . "LEFT JOIN USERS AS E ON (E.USR_ID=A.USR_ID) "
+                . "LEFT JOIN DYNAFORM AS F ON (F.DYN_ID=A.OBJECT_ID AND A.OBJECT_TYPE=" . ChangeLog::DYNAFORM . ") "
+                . "ORDER BY A.DATE ASC ";
+
+        $stmt = $conn->prepareStatement($sql);
+        $stmt->set(1, $appUid);
+        $stmt->executeQuery();
+        $result = $stmt->getResultSet();
+        while ($result->next()) {
+            $row = $result->getRow();
+            if (!empty($callback) && is_callable($callback)) {
+                $callback($row);
+            }
+        }
+    }
+
+    /**
+     * Get appData from value serialized.
+     * 
+     * @param string $appDataString
+     * @return array
+     */
+    private function getAppData($appDataString)
+    {
+        $case = new Cases();
+        $appData = $case->unserializeData($appDataString);
+        if (!is_array($appData)) {
+            $appData = [];
+        }
+        return $appData;
+    }
+
+    /**
+     * Remove all values from the array that are in the excludeVariables property.
+     * 
+     * @param array $appData
+     */
+    private function removeVariables(&$appData)
+    {
+        foreach ($this->excludeVariables as $value) {
+            unset($appData[$value]);
+        }
+    }
+
+    /**
+     * Has permission.
+     * 
+     * @param string $uid
+     * @return boolean
+     */
+    private function hasPermission($uid)
+    {
+        if (array_search($uid, $this->reservedSteps) !== false) {
+            return false;
+        }
+        foreach ($this->permissions as $ids) {
+            if (is_array($ids) && array_search($uid, $ids) !== false) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Returns the print string from the value.
+     * 
+     * @param mixed $value
+     * @return string
+     */
+    private function toString($value)
+    {
+        if (is_array($value)) {
+            return nl2br(print_r($value, true));
+        } else {
+            return (string) $value;
+        }
+    }
+}
diff --git a/workflow/engine/src/ProcessMaker/ChangeLog/LogStruct.php b/workflow/engine/src/ProcessMaker/ChangeLog/LogStruct.php
new file mode 100644
index 000000000..3807c8119
--- /dev/null
+++ b/workflow/engine/src/ProcessMaker/ChangeLog/LogStruct.php
@@ -0,0 +1,130 @@
+<?php
+
+namespace ProcessMaker\ChangeLog;
+
+class LogStruct
+{
+    /**
+     * Name of the variable.
+     * 
+     * @var string 
+     */
+    private $field = '';
+
+    /**
+     * Previous value of the variable.
+     * 
+     * @var string 
+     */
+    private $previousValue = '';
+
+    /**
+     * Current value.
+     * 
+     * @var string 
+     */
+    private $currentValue = '';
+
+    /**
+     * Previous type of variable.
+     * 
+     * @var string 
+     */
+    private $previousValueType = '';
+
+    /**
+     * Type of the variable.
+     * 
+     * @var string 
+     */
+    private $currentValueType = '';
+
+    /**
+     * Group of changes.
+     * 
+     * @var string 
+     */
+    private $record = '';
+
+    /**
+     * Set the field.
+     * 
+     * @param string $field
+     * @return $this
+     */
+    public function setField($field)
+    {
+        $this->field = $field;
+        return $this;
+    }
+
+    /**
+     * Set the previousValue.
+     * 
+     * @param string $previousValue
+     * @return $this
+     */
+    public function setPreviousValue($previousValue)
+    {
+        $this->previousValue = $previousValue;
+        return $this;
+    }
+
+    /**
+     * Set the currentValue.
+     * 
+     * @param string $currentValue
+     * @return $this
+     */
+    public function setCurrentValue($currentValue)
+    {
+        $this->currentValue = $currentValue;
+        return $this;
+    }
+
+    /**
+     * Set the previousValueType.
+     * 
+     * @param string $previousValueType
+     * @return $this
+     */
+    public function setPreviousValueType($previousValueType)
+    {
+        $this->previousValueType = $previousValueType;
+        return $this;
+    }
+
+    /**
+     * Set the currentValueType.
+     * 
+     * @param string $currentValueType
+     * @return $this
+     */
+    public function setCurrentValueType($currentValueType)
+    {
+        $this->currentValueType = $currentValueType;
+        return $this;
+    }
+
+    /**
+     * Set the record.
+     * 
+     * @param string $record
+     * @return $this
+     */
+    public function setRecord($record)
+    {
+        $this->record = $record;
+        return $this;
+    }
+
+    /**
+     * Get values.
+     * 
+     * @return array
+     */
+    public function getValues()
+    {
+        return get_object_vars($this);
+    }
+}