REST API output extraction error: java.lang.ClassNotFoundException: org.camunda.spin.Spin.S

Hi Everyone,

I am getting a java error for extracting a REST output in a service task based on Implementation as “connector”:
Error message: The process could not be started. : java.lang.ClassNotFoundException: org.camunda.spin.Spin.S

Output of REST API is:: {“script_id”:16,“run_id”:“445b52d3-0956-4c10-b690-c1f0bc9ba84f”}

In the connector output I amusing this javascript as Inlinescript and getting the above mentioned error. S(response).prop(“script_id”).numberValue()

If I switch to ${response} as expression the above output comes out. I want to extract the two parameters: run_id and script_id

Can anyone suggest where am I making the mistake?

Thank you very much in advance.

okay I found the solution. Instead of Variable Assignment Type:: Script, I need to keep it in String or Expression and then this code


It seems that this question was related to Camunda Platform and not Camunda Cloud.

Please use the other forum for Camunda Platform:


Thank you Philipp.