I am running a ForEach controller in which I want the controller to run the service underneath it for changes in sets of latitudes and longitudes. example-

Input variable prefix: latitude

Output variable name: Latitude

I want to run the controller for changes in both "latitude" and "longitude". I tried doing this-

Input variable prefix:latitude, longitude

but it does not work. Is there any other way to pass two variables in ForEach controller?