I still didn't figure out what's wrong. But instead i made my own aim pose system. I mean kind of. I put blendspace file in the last layer. My bspace contains all animations that are needed to create full aim pose. Then I called the fragment and I blended it up the way I wanted. It works perfectly !!! And all I have to do now is make simple blendspace files for characters I make and my "system" will read it and play. So far i haven't experienced any bugs and it seems to work not different to what aimpose system offers.
Cryengine tutorial videos on my Youtube channel! Check it out !