av->id_ik_hand_l = skeleton_bone_id( sk, "hand.IK.L" );
av->id_ik_hand_r = skeleton_bone_id( sk, "hand.IK.R" );
av->id_ik_elbow_l = skeleton_bone_id( sk, "elbow.L" );
av->id_ik_hand_l = skeleton_bone_id( sk, "hand.IK.L" );
av->id_ik_hand_r = skeleton_bone_id( sk, "hand.IK.R" );
av->id_ik_elbow_l = skeleton_bone_id( sk, "elbow.L" );