Launch - Allow fields to use data elements that return an arrayNew
I can create a Data Element of type javascript variable, or custom code, that references/returns an array. However, Launch (and DTM) doesn't have any functionality baked in to take advantage of this. Instead, it ultimately expects a string value returned (and type casts the value to string when parsing %data_element% syntax references to enforce it). Meanwhile, you have for example Adobe Analytics hier variable, which would benefit from being able to reference an array. As of right now you just provide 4 fields and i can reference 4 separate data elements (or hardcode 4 separate values). But in practice, I can have more than 4 levels in a hier variable. I think it should be a pretty easy update to the Launch interface to just have the hier[n] variables be a single field to reference a data element that returns an array, and a field to specify a delimiter (already implemented), and then under the hood, check if the returned data element value is an array and then join by delimiter
