I take it you’ve set it up so that you are using a custom made unit class that does not inherit from GridActor? I’m going to assume this. If so, you can make a new GridIndex variable for your custom unit blueprint. Take a look at the construction script of BP_GridActor to see how it is calculated. Then, for every place in the toolkit where GridIndex is normally gotten from BP_Unit you need to change it to instead get it from your custom unit class.