Camunda Multi Engine

Hello, trying to increase process engines to 3, but now got some errors.
I have custom expression {initApprovalListener}


also i have same problem with another custom expression,
but when i increase process engines to 3, others didn’t see this services, what i can do to fix this error?

@antoshka1312 heterogeneous or homogeneous cluster setup? Can you upload your bpmn model?