how to cast ammo count, from a inventory array pickup

hi, I was wondering how to go about displaying ammo pickup updated to hud , basically what ive tried to do is in the hudbp is to cast a number count based on a ammo pickup …when I pick up health it goes into my inventory array .and I can use it there …but when I try to use the ammo value to text …the ammo counter does/t update to the use of the item and display to text as a update to the ammo counter …im using a my character, to target get ammo value ,to int totext into the return node …this is integer btw ,I just not sure why it wont update the hud on use thx !

Can you show your setup?