diff --git a/ng2-components/ng2-activiti-tasklist/src/components/start-task.component.ts b/ng2-components/ng2-activiti-tasklist/src/components/start-task.component.ts
index 3938863b84..99ee041330 100644
--- a/ng2-components/ng2-activiti-tasklist/src/components/start-task.component.ts
+++ b/ng2-components/ng2-activiti-tasklist/src/components/start-task.component.ts
@@ -90,7 +90,7 @@ export class StartTaskComponent implements OnInit {
                 .switchMap((createRes: any) =>
                     this.attachForm(createRes.id, this.formKey).defaultIfEmpty(createRes)
                         .switchMap((attachRes: any) =>
-                            this.assignTask(createRes.id, this.assignee).defaultIfEmpty(attachRes ? attachRes : createRes)
+                            this.assignTaskByUserId(createRes.id, this.assignee.id).defaultIfEmpty(attachRes ? attachRes : createRes)
                         )
                 )
                 .subscribe(
@@ -112,10 +112,10 @@ export class StartTaskComponent implements OnInit {
         return response;
     }
 
-    private assignTask(taskId: string, assignee: any): Observable<any> {
+    private assignTaskByUserId(taskId: string, userId: any): Observable<any> {
         let response = Observable.of();
-        if (taskId && assignee) {
-            response = this.taskService.assignTask(taskId, assignee);
+        if (taskId && userId) {
+            response = this.taskService.assignTaskByUserId(taskId, userId);
         }
         return response;
     }
diff --git a/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.spec.ts b/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.spec.ts
index 33abca7ce3..f613d174dc 100644
--- a/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.spec.ts
+++ b/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.spec.ts
@@ -678,6 +678,39 @@ describe('Activiti TaskList Service', () => {
             });
         });
 
+        it('should assign task to a userId', (done) => {
+            let testTaskId = '8888';
+            service.assignTaskByUserId(testTaskId, fakeUser2.id).subscribe(
+                (res: TaskDetailsModel) => {
+                    expect(res).toBeDefined();
+                    expect(res.id).toEqual(testTaskId);
+                    expect(res.name).toEqual('FakeNameTask');
+                    expect(res.description).toEqual('FakeDescription');
+                    expect(res.category).toEqual('3');
+                    expect(res.created).not.toEqual('');
+                    expect(res.adhocTaskCanBeReassigned).toBe(true);
+                    expect(res.assignee).toEqual(new User(fakeUser2));
+                    expect(res.involvedPeople).toEqual([fakeUser1]);
+                    done();
+                }
+            );
+
+            jasmine.Ajax.requests.mostRecent().respondWith({
+                'status': 200,
+                contentType: 'application/json',
+                responseText: JSON.stringify({
+                    id: testTaskId,
+                    name: 'FakeNameTask',
+                    description: 'FakeDescription',
+                    adhocTaskCanBeReassigned: true,
+                    category: '3',
+                    assignee: fakeUser2,
+                    involvedPeople: [fakeUser1],
+                    created: '2016-07-15T11:19:17.440+0000'
+                })
+            });
+        });
+
         it('should claim a task', (done) => {
             let taskId = '111';
 
diff --git a/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.ts b/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.ts
index 5ad1b4b61d..483321d67c 100644
--- a/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.ts
+++ b/ng2-components/ng2-activiti-tasklist/src/services/tasklist.service.ts
@@ -416,7 +416,17 @@ export class TaskListService {
      * @returns {TaskDetailsModel}
      */
     assignTask(taskId: string, requestNode: any): Observable<TaskDetailsModel> {
-        return Observable.fromPromise(this.callApiAssignTask(taskId, requestNode))
+        let assignee = {assignee: requestNode.id} ;
+        return Observable.fromPromise(this.callApiAssignTask(taskId, assignee))
+            .map(res => res)
+            .map((response: TaskDetailsModel) => {
+                return new TaskDetailsModel(response);
+            }).catch(err => this.handleError(err));
+    }
+
+    assignTaskByUserId(taskId: string, userId: number): Observable<TaskDetailsModel> {
+        let assignee = {assignee: userId} ;
+        return Observable.fromPromise(this.callApiAssignTask(taskId, assignee))
             .map(res => res)
             .map((response: TaskDetailsModel) => {
                 return new TaskDetailsModel(response);