CPU keeps subbing my lineup

Hi there,
I need help with CPU subbing. If I play a match and sub C for PF CPU will immediatelly sub it back. I often happens when I put player with different primary position on court. Next timeout this player is always subbed out by the "correct" guy with primary position, which is correct. Is there anything I can do about it. THX a lot.

Hope you understand what I mean in this topic

set the user subtitution slider to zero