UE5: GetScreenSpacePosition() always return (0,0)

Question

I'm trying to extract the mouse position from FPointerEvent, but no matter what, it always return the coordinate of (0,0).

Note that I'm aware of APlayerController::GetMousePosition() function, but I'll be implement the same to dragging UMG so getting mouse properties from player controller won't work

Btw, I'm using UE5