Call a function of NULL object

Hi, everyone. So, i have one question: when i try to call a function when my object is NULL, this call will be just ignored without any warning or error. I tried to make a call like this:

So, is this alright, that there will be step over function “F Set Ability Icon in Slot”? And if it’s normal, please, tell me why

If it’s important, i tried to call a function of a null widget

It’s ok to pass null pointers, it’s just not ok to use them :wink: