The external function own_func_fred expects two parameters, both integers. It combines them and returns a string.
define proc own_func_fred define var str val1 val2 val1 = 10 val2 = 55 str = own_func_fred(val1, val2)A simple version of the external C++ function own_func_fred without error checks.
A more robust version of own_func_fred with error checks.