map ui widget with horror engine

so im very new to unreal engine, and im trying to make a map ui using the existing horror engine blueprint, and i’ve managed to create it, but is struggling to hide it, i’ve watched some tutorials but nothing helps!

i think the current problem is that the Map UI variable is stored locally in a function, so when called the second time, the is valid function runs the “is not valid” option which leads to nothing, because the map ui is now not valid! any solutions?