Using a placeholder/variable created via ModifyVariable in any formulas or expressions in 'ModifyEntity' don't function correctly. For example-
This spell randomly generates some Orange RGB values & then applies them to the dragon/mob's items, as well as saves these values as attributes. The placeholders work in the 'ColorItem' action, and the dragon correctly randomly generates its colours, but it does not function in 'ModifyEntity' and fails to save these attributes, leaving them at default (0). I believe this issue also ties in with my response to PhvntxmX's suggestion in Issue #1217