Show UI when condition is met

Hello, I started learning the UE4 blueprint system but am having some issues with showing a UI widget when a condition is met. I have been following some tutorials and the documentation, but am currently stuck.

I am using the side scroller template and made keys for the player to collect. When the key counter is equal or greater than 4, the player wins. The issue I’m having is that the UI doesn’t appear and I dont know what Im doing wrong.

Ill attach an image with the graphs, so you can get a better idea of what Im doing.