Resource not found for code unit with input parameter "JsonObject"

I am developing a code unit that I can hopefully use to perform CRUD operations for a number of tables. Ideally, I would pass in a Json object of whatever I’m inserting, and the integer table number to insert to. The problem is, anytime I have a code unit with a parameter other than “Text”, or “Integer”, it returns the resource not found error.

I will attach a picture below for reference. Shown in this picture, I’m able to make a call to the ItemTableInsert procedure just fine, but if I try to change my API call to InsertToTable, it is not found. I’ve tried changing the return type to JsonObject as well but that didn’t make a difference.