Really in difficult

so i need some tutoriale, if it exist and is possible, about how connect modeler and java code inherent at the external code.

There are a lot of tutorials out there to help you with that.
Here is one that uses an application server and here is one that uses spring boot.

There are more but that should be a good start.

Hi @Niall, a pleasure to interact with you directly.

I saw first tutorial that you post, and has been so helpful even if i didn’t use the enterprise versio… so i got had ti edit some steps to obtain the same result.
Now i want to create a connection that give me the chance to open a link from a user task, and it allow me to open something to compile, or just compiled, just to visualize. I don’t know how to move.