Using the 'Bake to Control Rig Space' node in Blueprints

Hello, I’m having some trouble with the “Bake Control Rig Space” node - I think I’m using it correctly - objective is to bake the currently selected control rig controls to the current sequence in Parent space. I have variables for the start and end of the range and the baking interval.

There’s not a ton of documentation on this node, but I’m not sure why this doesn’t work.

When executed, nothing is baked, despite the function returning “true”. Any ideas? Many thanks!