Tilitabik15

So I have an issue with my TCA quadrant, when in real life the position of quadrant is on idle, in the x-plane 11 it shows that it's on the 20-25%, when I reverse thrust it should go to -20% reverse thrust, but it goes to idle(0), I don't know how to fix that, I've read many articles but I still don't know how to fix it, please help me.