diff --git a/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.spec.ts b/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.spec.ts
index eee186a539..006bd79169 100644
--- a/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.spec.ts
+++ b/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.spec.ts
@@ -26,6 +26,7 @@ import { TranslationMock } from './../assets/translation.service.mock';
 import { newProcess, fakeProcessDefs, fakeProcessDefWithForm, taskFormMock } from './../assets/activiti-start-process.component.mock';
 import { ActivitiStartProcessInstance } from './activiti-start-process.component';
 import { ActivitiProcessService } from '../services/activiti-process.service';
+import { RestVariable } from 'alfresco-js-api';
 
 describe('ActivitiStartProcessInstance', () => {
 
@@ -206,9 +207,9 @@ describe('ActivitiStartProcessInstance', () => {
         }));
 
         it('should call service to start process with the variables setted', async(() => {
-            let inputProcessVariable = [];
+            let inputProcessVariable:RestVariable[] = [];
 
-            let variable: any = {};
+            let variable: RestVariable;
             variable.name = 'nodeId';
             variable.value = 'id';
 
diff --git a/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.ts b/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.ts
index 6c49d088c8..ca729cb39e 100644
--- a/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.ts
+++ b/ng2-components/ng2-activiti-processlist/src/components/activiti-start-process.component.ts
@@ -37,7 +37,7 @@ export class ActivitiStartProcessInstance implements OnChanges {
     appId: string;
 
     @Input()
-    variables: RestVariable;
+    variables: RestVariable[];
 
     @Output()
     start: EventEmitter<ProcessInstance> = new EventEmitter<ProcessInstance>();
diff --git a/ng2-components/ng2-activiti-processlist/src/services/activiti-process.service.ts b/ng2-components/ng2-activiti-processlist/src/services/activiti-process.service.ts
index 859d0b30bb..274f7ca9b1 100644
--- a/ng2-components/ng2-activiti-processlist/src/services/activiti-process.service.ts
+++ b/ng2-components/ng2-activiti-processlist/src/services/activiti-process.service.ts
@@ -276,7 +276,7 @@ export class ActivitiProcessService {
             .catch(err => this.handleError(err));
     }
 
-    startProcess(processDefinitionId: string, name: string, outcome?: string, startFormValues?: any, variables?: RestVariable): Observable<ProcessInstance> {
+    startProcess(processDefinitionId: string, name: string, outcome?: string, startFormValues?: any, variables?: RestVariable[]): Observable<ProcessInstance> {
         let startRequest: any = {
             name: name,
             processDefinitionId: processDefinitionId