How to set control rig animation channel value from blueprint?

I have a bool animation channel in control rig. Animation channels are children of Controls.
I want to set value of this animation channel from a blueprint. For controls there are dedicated functions - like “Set Control Bool” etc. which work, but animation channels are not mentioned anywhere.
I tried by setting pointing “Set Control Bool” node to “MyChannel” and “MyControl.MyChannel”, but it does not work.
I would just happily have boolean Animation Control, but it looks like it is not supported anymore in latest Unreal 5.6 - booleans are only available as channels.
Any ideas?

Bool Controls are available in 5.6