diff --git a/playground/matplus/marco-thom/marco-thom.bpmn b/playground/matplus/marco-thom/marco-thom.bpmn
index 652bc854..ae2adeb2 100644
--- a/playground/matplus/marco-thom/marco-thom.bpmn
+++ b/playground/matplus/marco-thom/marco-thom.bpmn
@@ -9,9 +9,8 @@
     <bpmn:sequenceFlow id="Flow_15xbhxe" sourceRef="Event_080m4ww" targetRef="Activity_1j0p48d" />
     <bpmn:sequenceFlow id="Flow_0wb2oef" sourceRef="Activity_1j0p48d" targetRef="Activity_068yj28" />
     <bpmn:endEvent id="Event_0y38muf">
-      <bpmn:incoming>Flow_1y3xhv5</bpmn:incoming>
+      <bpmn:incoming>Flow_062y3d0</bpmn:incoming>
     </bpmn:endEvent>
-    <bpmn:sequenceFlow id="Flow_1y3xhv5" sourceRef="Activity_068yj28" targetRef="Event_0y38muf" />
     <bpmn:scriptTask id="Activity_1j0p48d" name="initialize">
       <bpmn:incoming>Flow_15xbhxe</bpmn:incoming>
       <bpmn:outgoing>Flow_0wb2oef</bpmn:outgoing>
@@ -19,24 +18,26 @@
     </bpmn:scriptTask>
     <bpmn:scriptTask id="Activity_068yj28" name="add 1">
       <bpmn:incoming>Flow_0wb2oef</bpmn:incoming>
-      <bpmn:outgoing>Flow_1y3xhv5</bpmn:outgoing>
+      <bpmn:outgoing>Flow_16qhojl</bpmn:outgoing>
       <bpmn:multiInstanceLoopCharacteristics isSequential="true">
         <bpmn:loopDataInputRef>my_array</bpmn:loopDataInputRef>
         <bpmn:loopDataOutputRef>my_array</bpmn:loopDataOutputRef>
         <bpmn:inputDataItem id="x" name="x" />
-        <bpmn:outputDataItem id="x" name="x" />
       </bpmn:multiInstanceLoopCharacteristics>
       <bpmn:script>x = x + 1</bpmn:script>
     </bpmn:scriptTask>
+    <bpmn:sequenceFlow id="Flow_16qhojl" sourceRef="Activity_068yj28" targetRef="Activity_0uwao9w" />
+    <bpmn:callActivity id="Activity_0uwao9w">
+      <bpmn:incoming>Flow_16qhojl</bpmn:incoming>
+      <bpmn:outgoing>Flow_062y3d0</bpmn:outgoing>
+    </bpmn:callActivity>
+    <bpmn:sequenceFlow id="Flow_062y3d0" sourceRef="Activity_0uwao9w" targetRef="Event_0y38muf" />
   </bpmn:process>
   <bpmndi:BPMNDiagram id="BPMNDiagram_1">
     <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_marco_thom_4l3bjoe">
       <bpmndi:BPMNShape id="Event_080m4ww_di" bpmnElement="Event_080m4ww">
         <dc:Bounds x="-268" y="162" width="36" height="36" />
       </bpmndi:BPMNShape>
-      <bpmndi:BPMNShape id="Event_0y38muf_di" bpmnElement="Event_0y38muf">
-        <dc:Bounds x="202" y="162" width="36" height="36" />
-      </bpmndi:BPMNShape>
       <bpmndi:BPMNShape id="Activity_1khof2z_di" bpmnElement="Activity_1j0p48d">
         <dc:Bounds x="-180" y="140" width="100" height="80" />
         <bpmndi:BPMNLabel />
@@ -45,6 +46,12 @@
         <dc:Bounds x="20" y="140" width="100" height="80" />
         <bpmndi:BPMNLabel />
       </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Event_0y38muf_di" bpmnElement="Event_0y38muf">
+        <dc:Bounds x="472" y="162" width="36" height="36" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Activity_17xf99n_di" bpmnElement="Activity_0uwao9w">
+        <dc:Bounds x="240" y="140" width="100" height="80" />
+      </bpmndi:BPMNShape>
       <bpmndi:BPMNEdge id="Flow_15xbhxe_di" bpmnElement="Flow_15xbhxe">
         <di:waypoint x="-232" y="180" />
         <di:waypoint x="-180" y="180" />
@@ -53,9 +60,13 @@
         <di:waypoint x="-80" y="180" />
         <di:waypoint x="20" y="180" />
       </bpmndi:BPMNEdge>
-      <bpmndi:BPMNEdge id="Flow_1y3xhv5_di" bpmnElement="Flow_1y3xhv5">
+      <bpmndi:BPMNEdge id="Flow_16qhojl_di" bpmnElement="Flow_16qhojl">
         <di:waypoint x="120" y="180" />
-        <di:waypoint x="202" y="180" />
+        <di:waypoint x="240" y="180" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_062y3d0_di" bpmnElement="Flow_062y3d0">
+        <di:waypoint x="340" y="180" />
+        <di:waypoint x="472" y="180" />
       </bpmndi:BPMNEdge>
     </bpmndi:BPMNPlane>
   </bpmndi:BPMNDiagram>