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Unsure about how to trigger a blueprint

Hello

I’m streaming an animated character driven by motion and facial capture, from Motionbuilder to Unreal via the Live Link plugin. The face-animation, sent as morph targets, isn’t coming through. Or more precisely, isn’t being triggered. I’m following this guide from GitHub: LINK,

The suggested solution is to create a blueprint which changes the name of the incoming data, essentially removing a prefix. Then it says

And that’s where I fall off.

I do have an animation blueprint, which updates the Output Pose with the data from LiveLink, but how do I “use” the renaming blueprint?

It’s 00:30. Please send help.