Hi,
If you are using the legacy gui you can use "set Gui Alpha"
and use an "ease float on it" the float going from 1 to 0
If you are using Ugui, you need to get "Ugui Proxy Full" Package from the
Ecosystemand use "U Gui Grapic Set Color" instead of Gui Alpha,
Set color to none (click on the = sign) and set your float on the alpha line.
and turn on Every frame