Bootcamp Weapon Hud & Reloading Problem

I have only just started to use unity in the past weekish, I have very little scripting experience but understand the basics. I have been playing around with the bootcamp demo provided in the asset store, The problem occurs on a unaltered version of bootcamp.

When you reload either of the provided weapons the hud does not recognize the decrease in the amount of clips remaining. I found the variable to turn of unlimited clips and the player does run out of ammo and clips but the weaponhud does not regonise this. Anyone have any idea why this occurs??? I had a look at the scripts that run the hud and the gun and gunManager scripts. Any help would be appreciated.