Access process_instance_id in camunda modeler

I have a very simple workflow that that made in Camunda 8 modeler where I would like to catch a message. The correlation key for this message catch event should be the “process_instance_id”.

My question is, does the camunda 8 modeler have a “always set” or global variable that contains this process_instance_id that I can use as the correlation key?

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