diff --git a/application-engine/src/main/java/com/netgrif/application/engine/actions/ActionApiImpl.java b/application-engine/src/main/java/com/netgrif/application/engine/actions/ActionApiImpl.java
index 4967e85e3ce..be243a76b8d 100644
--- a/application-engine/src/main/java/com/netgrif/application/engine/actions/ActionApiImpl.java
+++ b/application-engine/src/main/java/com/netgrif/application/engine/actions/ActionApiImpl.java
@@ -111,7 +111,7 @@ public GetDataEventOutcome getData(String taskId, Map<String, String> params) {
     }
 
     @Override
-    public SetDataEventOutcome setData(String taskId, Map<String, Map<String, String>> dataSet, Map<String, String> params) throws JsonProcessingException {
+    public SetDataEventOutcome setData(String taskId, Map<String, Map<String, Object>> dataSet, Map<String, String> params) throws JsonProcessingException {
         log.debug("Setting data for task [{}] with params: [{}]", taskId, params == null ? "null" : params.toString());
         ObjectMapper mapper = new ObjectMapper(); 
         String json = mapper.writeValueAsString(dataSet);
diff --git a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/EventService.java b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/EventService.java
index e7c8549c214..14eba051496 100644
--- a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/EventService.java
+++ b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/EventService.java
@@ -51,6 +51,9 @@ public List<EventOutcome> runActions(List<Action> actions, Case useCase, Optiona
         List<Function> functions = useCase == null ? Collections.emptyList() : useCase.getPetriNet().getFunctions();
         actions.forEach(action -> {
             List<EventOutcome> outcomes = actionsRunner.run(action, useCase, task, params, functions);
+            if (useCase != null) {
+                workflowService.updateCaseFromDb(useCase);
+            }
             outcomes.stream().filter(SetDataEventOutcome.class::isInstance)
                     .forEach(outcome -> {
                         if (((SetDataEventOutcome) outcome).getChangedFields().isEmpty()) return;
@@ -75,6 +78,9 @@ public List<EventOutcome> runEventActions(Case useCase, Task task, List<Action>
         List<Function> functions = useCase == null ? Collections.emptyList() : useCase.getPetriNet().getFunctions();
         actions.forEach(action -> {
             List<EventOutcome> outcomes = actionsRunner.run(action, useCase, taskOpt, params, functions);
+            if (useCase != null) {
+                workflowService.updateCaseFromDb(useCase);
+            }
             outcomes.stream().filter(SetDataEventOutcome.class::isInstance)
                     .forEach(outcome -> {
                         if (((SetDataEventOutcome) outcome).getChangedFields().isEmpty()) return;
diff --git a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
index a16077f5307..1a25eb15fb0 100644
--- a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
+++ b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/WorkflowService.java
@@ -252,6 +252,16 @@ public Case resolveActorRef(Case useCase, boolean canSaveUseCase) {
         return useCase;
     }
 
+    @Override
+    public void updateCaseFromDb(Case useCase) {
+        Case actual = findOne(useCase.getStringId());
+        actual.getDataSet().forEach((id, dataField) -> {
+            if (dataField.isNewerThen(useCase.getDataField(id))) {
+                useCase.getDataSet().put(id, dataField);
+            }
+        });
+    }
+
     /**
      * Resolves actor permissions for the useCase based on the actor list data field.
      *
diff --git a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/interfaces/IWorkflowService.java b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/interfaces/IWorkflowService.java
index 0065281b897..48818587fa9 100644
--- a/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/interfaces/IWorkflowService.java
+++ b/application-engine/src/main/java/com/netgrif/application/engine/workflow/service/interfaces/IWorkflowService.java
@@ -31,6 +31,8 @@ public interface IWorkflowService {
 
     Case resolveActorRef(Case useCase, boolean canSaveUseCase);
 
+    void updateCaseFromDb(Case useCase);
+
     CreateCaseEventOutcome createCase(CreateCaseParams createCaseParams);
 
     Page<Case> findAllByAuthor(String authorId, String petriNet, Pageable pageable);
diff --git a/nae-object-library/src/main/java/com/netgrif/application/engine/objects/utils/Nullable.java b/nae-object-library/src/main/java/com/netgrif/application/engine/objects/utils/Nullable.java
index df50295a4ab..6326d09ee42 100644
--- a/nae-object-library/src/main/java/com/netgrif/application/engine/objects/utils/Nullable.java
+++ b/nae-object-library/src/main/java/com/netgrif/application/engine/objects/utils/Nullable.java
@@ -25,9 +25,12 @@ public final class Nullable<T> implements Serializable {
     private static final long serialVersionUID = 8683452581122892189L;
 
     private final T value;
+    
+    private final Class<T> type;
 
-    private Nullable(T value) {
+    private Nullable(T value, Class<T> type) {
         this.value = value;
+        this.type = type;
     }
 
     /**
@@ -39,6 +42,15 @@ public T get() {
         return value;
     }
 
+    /**
+     * Returns the runtime class type of the value that can be held by this {@code Nullable} instance.
+     *
+     * @return the {@code Class} object representing the type {@code T}, or {@code null} if no type was specified
+     */
+    public Class<T> getType() {
+        return type;
+    }
+
     /**
      * Creates a new {@code Nullable} instance containing the given value.
      *
@@ -46,7 +58,19 @@ public T get() {
      * @return a {@code Nullable} instance wrapping the provided value
      */
     public static <T> Nullable<T> of(T value) {
-        return new Nullable<>(value);
+        return new Nullable<>(value, null);
+    }
+
+    /**
+     * Creates a new {@code Nullable} instance containing the given value and explicit type information.
+     *
+     * @param <T>   the type of the value to wrap
+     * @param value the value to wrap in a {@code Nullable} instance, can be {@code null}
+     * @param type  the {@code Class} object representing the type {@code T}, can be {@code null}
+     * @return a {@code Nullable} instance wrapping the provided value with type information
+     */
+    public static <T> Nullable<T> of(T value, Class<T> type) {
+        return new Nullable<>(value, type);
     }
 
     /**
@@ -56,7 +80,18 @@ public static <T> Nullable<T> of(T value) {
      * @return an empty {@code Nullable} instance
      */
     public static <T> Nullable<T> empty() {
-        return new Nullable<>(null);
+        return new Nullable<>(null, null);
+    }
+
+    /**
+     * Returns an empty {@code Nullable} instance holding no value but with explicit type information.
+     *
+     * @param <T>  the type of the value that can be held by this {@code Nullable} instance
+     * @param type the {@code Class} object representing the type {@code T}, can be {@code null}
+     * @return an empty {@code Nullable} instance with type information
+     */
+    public static <T> Nullable<T> empty(Class<T> type) {
+        return new Nullable<>(null, type);
     }
 
     /**
@@ -125,7 +160,7 @@ public Nullable<T> filter(Predicate<? super T> predicate) {
         if (isEmpty()) {
             return this;
         } else {
-            return predicate.test(value) ? this : empty();
+            return predicate.test(value) ? this : empty(type);
         }
     }
 
@@ -276,7 +311,8 @@ public boolean equals(Object obj) {
         }
 
         return obj instanceof Nullable<?> other
-                && Objects.equals(value, other.value);
+            && Objects.equals(value, other.value)
+            && Objects.equals(type, other.type);
     }
 
     /**
@@ -287,7 +323,7 @@ public boolean equals(Object obj) {
      */
     @Override
     public int hashCode() {
-        return Objects.hashCode(value);
+        return Objects.hash(value, type);
     }
 
     /**
diff --git a/nae-spring-core-adapter/src/main/java/com/netgrif/application/engine/adapter/spring/actions/ActionApi.java b/nae-spring-core-adapter/src/main/java/com/netgrif/application/engine/adapter/spring/actions/ActionApi.java
index 0fcf7a37301..fac2f567093 100644
--- a/nae-spring-core-adapter/src/main/java/com/netgrif/application/engine/adapter/spring/actions/ActionApi.java
+++ b/nae-spring-core-adapter/src/main/java/com/netgrif/application/engine/adapter/spring/actions/ActionApi.java
@@ -47,7 +47,7 @@ public interface ActionApi {
      * @return the outcome of the set data operation
      * @throws JsonProcessingException if there is an error processing JSON data
      */
-    SetDataEventOutcome setData(String taskId, Map<String, Map<String, String>> dataSet, Map<String, String> params) throws JsonProcessingException;
+    SetDataEventOutcome setData(String taskId, Map<String, Map<String, Object>> dataSet, Map<String, String> params) throws JsonProcessingException;
 
     /**
      * Finds a specific case by its ID.