I am trying to create a register event for an ActiveX component. The problem I am having is creating the callback vi. When I right click on the VI ref and create the callback vi it is created with the user parameter as a variant. I would like this to be a control refnum. If I open the callback vi and replace the user parameter variant with a control refnum the wire from the callback vi to the VI ref is broken. How do I change the user parameter?
