Who is calling "GrabActor" and "ReleaseActor" in BP_MotionController of 4.13 VR Template ???

Hello,

I’m trying to make some modifications to the newly released VR template of UE 4.13.
For that I need to know which hand was used when grabbing an actor, so I added the accourding input-parameter to the GrabActor and ReleaseActor functions in the BP_MotionController blueprint.
I can see that they are called from somewhere when I grab/release something by printing some trace, but I’m unable to figure out who’s actually calling these functions (in order to connect my newly added parameter).
Using “FindReferences” won’t give me any references on either function. Also a lot of searching on the internet yielded nothing.

Can somebody help me out here please ?

Cheers !

It is called from the MotionControllerPawn blueprint

ah ok. thank you very much. kinda weird though that the “Find References” won’t show me that.