IK for arms ue4 VR

Hello im currenlty working on a vr game, and i have just got some basic featueres in the game so far. But im stuck and i have been trying to fix this problem for many days now.

The problem is that the arm wont turn with the hand, i have tryed fixing it with ik but i cant get it
I was wondering if it was possible to IK the arm shown on the image with the hand, there is a bone in the middle of the arm that is called: lowerarm_twist