diff --git a/workflow/engine/classes/PmDynaform.php b/workflow/engine/classes/PmDynaform.php
index f36ee0bae..83bfbd01d 100644
--- a/workflow/engine/classes/PmDynaform.php
+++ b/workflow/engine/classes/PmDynaform.php
@@ -2,6 +2,7 @@
 
 use ProcessMaker\Core\System;
 use ProcessMaker\BusinessModel\DynaForm\SuggestTrait;
+use ProcessMaker\BusinessModel\Cases;
 
 /**
  * Implementing pmDynaform library in the running case.
@@ -250,11 +251,6 @@ class PmDynaform
                             $dtFields = $json->queryInputData;
                         } else {
                             $dtFields = $this->getValuesDependentFields($json);
-                            foreach ($dtFields as $keyF => $valueF) {
-                                if (isset($this->fields["APP_DATA"][$keyF])) {
-                                    $dtFields[$keyF] = $this->fields["APP_DATA"][$keyF];
-                                }
-                            }
                         }
                         $sql = G::replaceDataField($json->sql, $dtFields);
                         if ($value === "suggest") {
@@ -610,7 +606,8 @@ class PmDynaform
                     $json->dataGridEnvironment = "onDataGridEnvironment";
                     if (isset($this->fields["APP_DATA"])) {
                         $dataGridEnvironment = $this->fields["APP_DATA"];
-                        $this->fields["APP_DATA"] = [];
+                        //Grids only access the global variables of 'ProcessMaker', other variables are removed.
+                        $this->fields["APP_DATA"] = Cases::getGlobalVariables($this->fields["APP_DATA"]);
                         //restore AppData with dataVariable definition, only for columns control
                         foreach ($columnsDataVariable as $dge) {
                             if (isset($dataGridEnvironment[$dge])) {
@@ -691,7 +688,14 @@ class PmDynaform
         if (!isset($this->record["DYN_CONTENT"])) {
             return array();
         }
-        $data = array();
+        $data = [];
+        if (isset($this->fields["APP_DATA"])) {
+            foreach ($this->fields["APP_DATA"] as $keyF => $valueF) {
+                if (!isset($data[$keyF]) && !is_array($valueF)) {
+                    $data[$keyF] = $valueF;
+                }
+            }
+        }
         if (isset($json->dbConnection) && isset($json->sql)) {
             $result = array();
             preg_match_all('/\@(?:([\@\%\#\=\!Qq])([a-zA-Z\_]\w*)|([a-zA-Z\_][\w\-\>\:]*)\(((?:[^\\\\\)]*?)*)\))/', $json->sql, $result, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE);
@@ -708,18 +712,12 @@ class PmDynaform
                 }
             }
             if ($json->dbConnection !== "" && $json->dbConnection !== "none" && $json->sql !== "") {
-                if (isset($this->fields["APP_DATA"])) {
-                    foreach ($this->fields["APP_DATA"] as $keyA => $valueA) {
-                        if (!isset($data[$keyA]) && !is_array($valueA)) {
-                            $data[$keyA] = $valueA;
-                        }
-                    }
-                }
                 $sql = G::replaceDataField($json->sql, $data);
                 $dt = $this->getCacheQueryData($json->dbConnection, $sql, $json->type);
                 $row = isset($dt[0]) ? $dt[0] : [];
-                if (isset($row[0]) && $json->type !== "suggest" && $json->type !== "radio") {
-                    $data[$json->variable === "" ? $json->id : $json->variable] = $row[0];
+                $index = $json->variable === "" ? $json->id : $json->variable;
+                if (!isset($data[$index]) && isset($row[0]) && $json->type !== "suggest" && $json->type !== "radio") {
+                    $data[$index] = $row[0];
                 }
             }
         }
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
index a6ebcf7c9..938a61b01 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
@@ -12,6 +12,8 @@ use WsBase;
 use RBAC;
 use Applications;
 use PmDynaform;
+use ProcessMaker\Services\OAuth2\Server;
+use Users;
 
 class Cases
 {
@@ -1679,7 +1681,8 @@ class Cases
         $arrayCaseVariable = [];
 
         if (!is_null($dynaFormUid)) {
-
+            $data = [];
+            $data["APP_DATA"] = $fields['APP_DATA'];
             $data["CURRENT_DYNAFORM"] = $dynaFormUid;
             $pmDynaForm = new PmDynaform($data);
             $arrayDynaFormData = $pmDynaForm->getDynaform();
@@ -3244,26 +3247,48 @@ class Cases
         $appData = array_change_key_case($appData, CASE_UPPER);
         $dataVariable = array_change_key_case($dataVariable, CASE_UPPER);
 
-        if (!isset($dataVariable['APPLICATION']) || empty($dataVariable['APPLICATION'])) {
-            $dataVariable['APPLICATION'] = (isset($dataVariable['APP_UID']) && $dataVariable['APP_UID'] != '') ? $dataVariable['APP_UID'] : $appData['APPLICATION'];
+        $result = [];
+        //we get the appData parameters
+        if (!empty($appData['APPLICATION'])) {
+            $result['APPLICATION'] = $appData['APPLICATION'];
         }
-        if (!isset($dataVariable['PROCESS']) || empty($dataVariable['PROCESS'])) {
-            $dataVariable['PROCESS'] = (isset($dataVariable['PRO_UID']) && $dataVariable['PRO_UID'] != '') ? $dataVariable['PRO_UID'] : $appData['PROCESS'];
+        if (!empty($appData['PROCESS'])) {
+            $result['PROCESS'] = $appData['PROCESS'];
         }
-        if (isset($appData['TASK']) && !empty($appData['TASK'])) {
-            $dataVariable['TASK'] = $appData['TASK'];
+        if (!empty($appData['TASK'])) {
+            $result['TASK'] = $appData['TASK'];
         }
-        if (isset($appData['INDEX']) && !empty($appData['INDEX'])) {
-            $dataVariable['INDEX'] = $appData['INDEX'];
-        }
-        $dataVariable['USER_LOGGED'] = \ProcessMaker\Services\OAuth2\Server::getUserId();
-        if (isset($dataVariable['USER_LOGGED']) && !empty($dataVariable['USER_LOGGED'])) {
-            $oUserLogged = new \Users();
-            $oUserLogged->load($dataVariable['USER_LOGGED']);
-            $dataVariable['USR_USERNAME'] = $oUserLogged->getUsrUsername();
+        if (!empty($appData['INDEX'])) {
+            $result['INDEX'] = $appData['INDEX'];
         }
 
-        return $dataVariable;
+        //we try to get the missing elements
+        if (!empty($dataVariable['APP_UID']) && empty($result['APPLICATION'])) {
+            $result['APPLICATION'] = $dataVariable['APP_UID'];
+        }
+        if (!empty($dataVariable['PRO_UID']) && empty($result['PROCESS'])) {
+            $result['PROCESS'] = $dataVariable['PRO_UID'];
+        }
+
+        $result['USER_LOGGED'] = '';
+        $result['USR_USERNAME'] = '';
+        global $RBAC;
+        if (isset($RBAC) && isset($RBAC->aUserInfo)) {
+            $result['USER_LOGGED'] = $RBAC->aUserInfo['USER_INFO']['USR_UID'];
+            $result['USR_USERNAME'] = $RBAC->aUserInfo['USER_INFO']['USR_USERNAME'];
+        }
+        if (empty($result['USER_LOGGED'])) {
+            $result['USER_LOGGED'] = Server::getUserId();
+            if (!empty($result['USER_LOGGED'])) {
+                $oUserLogged = new Users();
+                $oUserLogged->load($result['USER_LOGGED']);
+                $result['USR_USERNAME'] = $oUserLogged->getUsrUsername();
+            }
+        }
+
+        //the parameter dataVariable may contain additional elements
+        $result = array_merge($dataVariable, $result);
+        return $result;
     }
 
     /**
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Variable.php b/workflow/engine/src/ProcessMaker/BusinessModel/Variable.php
index abc80d5ef..ce7ab42a6 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Variable.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Variable.php
@@ -5,6 +5,7 @@ use G;
 use Exception;
 use AdditionalTables;
 use PmDynaform;
+use ProcessMaker\BusinessModel\Cases;
 
 class Variable
 {
@@ -773,11 +774,14 @@ class Variable
             unset($params["limit"]);
 
             //Get appData and system variables
+            $paramsWithoutAppData = $params;
+            $globalVariables = [];
             if ($appUid !== null) {
                 $case = new \Cases();
                 $fields = $case->loadCase($appUid, $delIndex);
                 $appData = $fields["APP_DATA"];
-                $appData = array_merge($appData, \ProcessMaker\BusinessModel\Cases::getGlobalVariables($appData));
+                $globalVariables = Cases::getGlobalVariables($appData);
+                $appData = array_merge($appData, $globalVariables);
                 $params = array_merge($appData, $params);
             }
 
@@ -795,6 +799,14 @@ class Variable
             $field->queryFilter = $filter;
             $field->queryStart = $start;
             $field->queryLimit = $limit;
+            //Grids only access the global variables of 'ProcessMaker', other variables are removed.
+            //The property 'columnWidth' is only present in the controls of a grid, 
+            //in the current change there is no specific property that indicates 
+            //if the control is in the grid.
+            if (isset($field->columnWidth)) {
+                $pmDynaform->fields["APP_DATA"] = $globalVariables;
+                $field->queryInputData = $paramsWithoutAppData;
+            }
 
             //Populate control data
             $pmDynaform->jsonr($field);