Roll the dice

exclusiveGateway.xml

<bpmn2:exclusiveGateway id="gateway" name="Dice">
  <bpmn2:extensionElements>
    <camunda:executionListener event="start">

      <!-- script as execution listener -->
      <camunda:script scriptFormat="groovy">
        aNumber = new Random().nextInt(6) + 1
        println "$aNumber was diced"
        execution.setVariable('aNumber', aNumber)
      </camunda:script>

    </camunda:executionListener>
  </bpmn2:extensionElements>
</bpmn2:exclusiveGateway>