Global variable of process definition

I want to declare a variable that share between all process instance of same process definition. How can I define this process definition scope variable?

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Hi @Mohammad_Mahdavi,

I am afraid this seems to be impossible as the largest variable scope is the process instance itself. You can however pass Variables from/to Call Activities. But I don’t think this is what you are looking for. Also note that variables passed from/to Call Activities are not shared but in fact copied.

You can read up on variables and their scopes in the documentation.
https://docs.camunda.org/manual/7.10/user-guide/process-engine/variables/

More Information about the Call Activity can be found in the docs as well.
https://docs.camunda.org/manual/7.9/reference/bpmn20/subprocesses/call-activity/

In case you are interested in digging a bit deeper into how the engine’s internal representation of process instancen and the different scopes are, here is an article that covers that topic.

I hope this helped. Let me know if anything is unclear.
Cheers,
Miklas

Hi @Mohammad_Mahdavi,

you have to implement the storage outside of the engine in your business environment.

Depending on your technology (Spring or JEE or…) it should be easy as the frameworks offers a lot for simple implementations.

Hope this helps, Ingo