I started to go into deeper and found the solution for this. If you are using private cloud and you are using Linux on your premise, then you can enable debugger by following the steps below; connect to your private cloud application (using Putty or any other tool you use) >> m2ee >> enable_debugger
This will give you option to set password which you can use in your business modeler to connect the private cloud debugger.
If you want to disable the debugger then you can use disable_debugger command.
For more commands and help you can use help and for advance options you can use help expert
Note: All commands are case sensitive. You also need to raise a support ticket to enable debugger request location on the web server.
Are you using Linux or Windows on premise? In the Windows service console you can enable the debugger which will give (or allow you to set?) a password that you can use to connect to the server from the Modeler.
On Linux I'm not sure what kind of tooling is available but it's still possible to enable the debugger. You can send a JSON admin command (so to the administration port) called
"enable_debugger" and it should contain a field called
"password" which is the password of your choosing for connecting the debugger. To disable the debugger, send
"disable_debugger" as an admin command.
If you type "m2ee help expert" you should also see these commands.
Edit: you can also check here