so i thought that it mite be the fact you cant create flexors on IK handles, so i thought about it, but obviously not cos i have flexors on the other arm, and they work fine i can add them to anywhere on the other arm so then i thought it mite b cos of mirrored joints and IK, so i renamed everything, its still the same and besides, the right leg is mirrored, i can add flexors to that with no problem, its JUST this one arm for some reason