performance-samples | show APIs and best practices | Performance Testing library

I am using JMeter tool to send some rest API request to jBPM. I use this post request to create process instances in JBPM with JMeter:

This one creates two process instances with id 1 and another process instance with id 2.

I use this one to extract the process instance id = 1:

I use this one to get and exctract the task id:

How can I modify the JMeter tool to extract only the second process id, for example in my case to extract the process instance id=2? I tried to add +1 in the Regular Expression but it didn't work. I tried it with postman also and this configuration I made only works if I extract the second process instance id, because only the second one have data's like this: