[Omar]

Has the code ever worked?
Have you ever had anything on the robot work?

Joysticks Dead? Try the Joystick example project to confirm there is no problem there.

Then move on to the Tank drive example project to confirm that works.
If that does not work, then we here on Chief Delphi will be better able to trouble that code than we will be able to trouble shoot your code which we have no clue as to what you are doing in your code.

Get the Tank Drive example working first then try your code again.