Disable changing variables during debug for a specific program

Hi,

We've a program that we need to run ONLY IN DEVELOPMENT system (it will not be moved to QA or Prod). As all developers will have debug access, we some how want to restrict all users from changing the variable values (example - changing sy-subrc from 4 to 0) in debug. Developers should be able to debug and change variables for all other programs.

I know all variable changes during debug will be written to system log and can be retrieved from SM21. But if there is a possibility we want to restrict while changing itself.

Is it possible to achieve this using security setup?

Is it possible to achieve this using code? Can we do something like throwing an error if someone is trying to debug this program?

Thanks

Ram