How to make 1 widget go on top of all other and be shown first and the other ones are behind it ?

I have some normal widget with life mana xp and so on when the game starts but then when i press a key my skill tree widget opens and i want it to be on top.

Right now the life mana widget is shown first and when i open the skill tree it overlaps it so i cant see the whole skill tree because its behind the life mana widget. I tried to put Z order on the life and mana widget to 0 then skill tree to 1000 xD but it didnt help. I awso tried to rearange the order of the widgets after event begin play so the skill tree is last there or first i tried both but all fail. The mana and life widget is aways on top so how can i manage to change that ?