How do you reference a Control Rig being animated in sequencer from a widget?

I’m attempting to create a simple control picker / animator UI using an Editor Utility Widget, but I can’t figure out how to make a reference to the control rig. I’ve been looking through the variable types and there’s one of type ‘Control Rig Blueprint’ and I can set my character’s control rig as the default, but I haven’t found a way to reference the active instance of the control rig being worked on in the sequencer, or to any of the controls in the hierarchy. Does anyone know how to go about setting this up, or can point me to some good resources on it?

I’m having the same issue. There is none to select, but if I select the blank slot I think it is referencing the controlrig on the scene because the visibility controls are working. The issue is that nothing but the visibility controls works.