Change Physics Constraint components at runtime

Is there a way to change the components a physics constraint component is affecting at runtime (ie in blueprints on a spawned actor or component)? It seems that there are no variables or functions you can call on the constraint once it is in the event graph.

I would also like this question to be answered.

See this A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums

Or this: https://answers.unrealengine.com/questions/41232/how-to-set-constraint-actor-1-in-blueprint.html