Reading 4 analog value

Im trying to read 4 potentiometers analog values that connected to pin 0,1,2 and 3.

I got right values of first 3 potentiometers, the fourth one that connected to pin 4, is reading wrong value and is not stable sometimes i get it right and sometimes wrong.

The four potentiometers controll 4 servo and but that problem make the servo not stable.

I used microbit V2 in makecode i disabled led block

Any advise plz