diff --git a/workflow/engine/classes/class.pmFunctions.php b/workflow/engine/classes/class.pmFunctions.php
index f3cfb01a4..c608d430b 100644
--- a/workflow/engine/classes/class.pmFunctions.php
+++ b/workflow/engine/classes/class.pmFunctions.php
@@ -30,8 +30,12 @@
 ////////////////////////////////////////////////////
 use ProcessMaker\Util\ElementTranslation;
 
-if (! class_exists( 'PMScript' )) {
-    G::LoadClass( 'pmScript' );
+if (!class_exists('Monolog\Logger')) {
+    Bootstrap::initVendors();
+}
+
+if (!class_exists('PMScript')) {
+    G::LoadClass('pmScript');
 }
 
 /**
diff --git a/workflow/engine/classes/model/ListParticipatedLast.php b/workflow/engine/classes/model/ListParticipatedLast.php
index 63dc369b2..6407718c5 100644
--- a/workflow/engine/classes/model/ListParticipatedLast.php
+++ b/workflow/engine/classes/model/ListParticipatedLast.php
@@ -297,6 +297,15 @@ class ListParticipatedLast extends BaseListParticipatedLast
             $aConditions[] = array(ProcessPeer::PRO_CATEGORY, "'".$category."'");
             $criteria->addJoinMC($aConditions, Criteria::INNER_JOIN);
         }
+
+        //Those filters: $newestthan, $oldestthan is used from mobile GET /light/participated
+        if ($newestthan != '') {
+            $criteria->add( $criteria->getNewCriterion( ListParticipatedLastPeer::DEL_DELEGATE_DATE, $newestthan, Criteria::GREATER_THAN ));
+        }
+
+        if ($oldestthan != '') {
+            $criteria->add( $criteria->getNewCriterion( ListParticipatedLastPeer::DEL_DELEGATE_DATE, $oldestthan, Criteria::LESS_THAN ));
+        }
     }
 
     public function loadList($usr_uid, $filters = array(), $callbackRecord = null, $appUid = '')