Floating mob help

Hello

I want to make my mob float up to the sky when i right click it with the item i have it just fly up then fall but i want it to continuously go up in the function called func_111207_a i do have a tick handler just dont know how to use it in this context.

Item Code: https://github.com/ultamatum/Thhgttg-Mod/blob/master/Thhgttg_Common/net/ultamatum/thhgttg/item/Item_GravStick.java

Tick Handler: https://github.com/ultamatum/Thhgttg-Mod/blob/master/Thhgttg_Common/net/ultamatum/thhgttg/core/handlers/TickHandler.java

please help thanks alot

-ultamatum