Apply additive animation on specified bone/bones

I think I’m having the same issue.

Thing is, you can’t use montages inside states.

I have a Idle/walk blendspace state, and I want to play anj animation sequence called “AimIn” when transitioning to the aiming idle walk BS state.

However, the AimIn sequence has animated legs, which I want to use if the character’s speed = 0, but not if it’s > 0. I’d have to switch between the sequence playing in full, or with a layered blend per bone. but in a state, I also can’t call some other pose from another state to put as base pose.

I don’t see how to do this in a state machine. ideas?