Sorry, I’ve been sitting here laughing at myself - it reminds me of the Gag where one person is telling another about a person named “Hue” - who? Hue! yeah, that’s what I’m asking - who? etc 
I think I need some sleep.
Rather than set Zombie in the header there (as it’s most probably a nullptr at that point) try setting it as the first line in the ExecuteTask function.