Nothing happen when I used bind event dispatcher

Development Programming & Scripting Blueprint
1

I do everything from tutorial at anywhere and it’s not happen to me
I just want to make it clickable and switch camera in level blueprint.
Is this bug? or should I use latest version?

I’m using version 4.7

2

Thank you, it’s worked!

but the next problem is a widget won’t close after I clicked button even I used Remove From Parent
but don’t worry I’ve solved it already.
Remove From Parent doesn’t work for me so I used Remove All Widget instead.