Cannot use 'this' as a ref or out value because it is read-only | (kinda)SOLVED

I was having a problem where if I would do HandItem.Unequip(ref this);, where this is an ItemUserinterface, I would get an error from visual studio saying:

Cannot use 'this' as a ref or out value because it is read-only

, but I've found a solution: instead of using this I tried using an auxiliary declaration and set the properties of this to be that of the other ItemUser:

 ItemUser IU = this;
 
 HandItem.Unequip(ref IU);
 
 Hand = IU.Hand;
 HandItem = IU.HandItem;
 PocketItem = IU.PocketItem;

This way it works. Hope I helped someone today :)