Problem using Multiple Instance sub-process

[Giovanni Mirabile]

Hi everyone,
I’m currently facing issues trying to use a Multiple Instance Sub-Process in my BPMN process (using Apache KIE/Kogito/jBPM). It seems like the sub-process is not working as expected — the behavior is inconsistent or simply not triggered.
Is there any documentation or working example that shows how to configure and use a multiple instance sub-process properly?
I’ve already checked the available documentation, but it doesn’t go into much detail for this specific use case.

Any help or pointers would be greatly appreciated.

Thanks in advance!