IK collision collider not working

Currently I’m using a tracking system to move several character body part. What I want is to collide two body part while using a full IK solution so they won’t go inside each other. I tried several solution but never end up with what I wanted.

1: Physic assets: I added collider to the problematic bone, set them to “kinematic”, the two bone never collide but still react to the tracking system.

2: Physic assets: I added collider to the problematic bone, set one of them to “Simulated”, collision work like I want it to behave, but now the bone that is set to “Simulated” don’t react anymore to the tracking system.

3: Blueprint actor: I added sphere collider and them associate them with the bones that they need to be attach, put collision to: BlockAll, the two bone never collide but still react to the tracking system.

Is there another solution, I don’t really know. I really need help with that one. I just want to be possible to not put a tracking body part inside of another one.