Resembles the functionality of isArray, in that a return type will change a value field's ouput.
ATM, there is one possible value for a return type:
int
Parses the value using C#'s int.Parse. Returns the value without any quotes.
long
Parses the value using C#'s long.Parse. Returns the value without any quotes.
bool
If the value output by a value field is a bit (0 or 1) or a string ("true" or "false") then these values are converted to true or false.