I just want to set the passability of items with two compartments, the character's head will be partially obscured by the top tile of the item, here's what I'm having and the problem I'm having:

   

Here's the item passability I set:

 

I want the character to be able to stand in front of the barrel normally, and hide behind the barrel normally, I know that the character's head is partially obscured because I set the top tile of the itemto be above the character，is there a better way to set the passability of 2-compartment items? please help me...