diff --git a/playground/volker-kuehn/firstmenu/Start.bpmn b/playground/volker-kuehn/firstmenu/Start.bpmn
new file mode 100644
index 00000000..b95db7f1
--- /dev/null
+++ b/playground/volker-kuehn/firstmenu/Start.bpmn
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_96f6665" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="3.0.0-dev">
+  <bpmn:process id="Process_k1usj68" isExecutable="true">
+    <bpmn:startEvent id="StartEvent_1">
+      <bpmn:outgoing>Flow_0tuyhzo</bpmn:outgoing>
+    </bpmn:startEvent>
+    <bpmn:task id="Activity_0a3nimb">
+      <bpmn:incoming>Flow_0tuyhzo</bpmn:incoming>
+      <bpmn:outgoing>Flow_0g933vb</bpmn:outgoing>
+    </bpmn:task>
+    <bpmn:endEvent id="Event_0f0uw1j">
+      <bpmn:incoming>Flow_0g933vb</bpmn:incoming>
+    </bpmn:endEvent>
+    <bpmn:sequenceFlow id="Flow_0g933vb" sourceRef="Activity_0a3nimb" targetRef="Event_0f0uw1j" />
+    <bpmn:sequenceFlow id="Flow_0tuyhzo" sourceRef="StartEvent_1" targetRef="Activity_0a3nimb" />
+  </bpmn:process>
+  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
+    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_k1usj68">
+      <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
+        <dc:Bounds x="179" y="159" width="36" height="36" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Activity_0a3nimb_di" bpmnElement="Activity_0a3nimb">
+        <dc:Bounds x="270" y="137" width="100" height="80" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNShape id="Event_0f0uw1j_di" bpmnElement="Event_0f0uw1j">
+        <dc:Bounds x="422" y="159" width="36" height="36" />
+      </bpmndi:BPMNShape>
+      <bpmndi:BPMNEdge id="Flow_0g933vb_di" bpmnElement="Flow_0g933vb">
+        <di:waypoint x="370" y="177" />
+        <di:waypoint x="422" y="177" />
+      </bpmndi:BPMNEdge>
+      <bpmndi:BPMNEdge id="Flow_0tuyhzo_di" bpmnElement="Flow_0tuyhzo">
+        <di:waypoint x="215" y="177" />
+        <di:waypoint x="270" y="177" />
+      </bpmndi:BPMNEdge>
+    </bpmndi:BPMNPlane>
+  </bpmndi:BPMNDiagram>
+</bpmn:definitions>
diff --git a/playground/volker-kuehn/firstmenu/process_model.json b/playground/volker-kuehn/firstmenu/process_model.json
index 962417d6..07ebfc33 100644
--- a/playground/volker-kuehn/firstmenu/process_model.json
+++ b/playground/volker-kuehn/firstmenu/process_model.json
@@ -4,6 +4,6 @@
     "exception_notification_addresses": [],
     "fault_or_suspend_on_exception": "fault",
     "metadata_extraction_paths": null,
-    "primary_file_name": null,
-    "primary_process_id": null
+    "primary_file_name": "Start.bpmn",
+    "primary_process_id": "Process_k1usj68"
 }
\ No newline at end of file