When I move the control joystick to the reverse position, the engine turns forward

Hello, I am using pixhawk 2.4.8, evo 40 motor driver, r12ds receiver, at9s remote control, dc inductor motor for my unmanned agricultural vehicle project. The problem is that when I move the control joystick to the forward position, the engine turns forward without any problems, but when I move it to the reverse position, the engine turns forward again when it should turn back.
Can you help me?

@Mete_Ersoy, why a new thread?
Why not all information I recommended before in the other thread
Did you follow up all steps of the rover wiki?
How are the connections of your systems?.

@Mete_Ersoy
still, provide paramfile and logfile of the pixhawk and which firmware is running on pixhawk