The returned value is a key component of functions.
ARCHLine.XP defines a private integer called callReturn and string called callResult for sharing data with other applications.
The int callReturn variable contains the function’s result and send back to the caller.
0 typically means success and negative value means failure.
The std::string callResult contains information about the result of the function.
GET_DATA IFC ID num
Exports the geometry and parameters of the selected element to an IFC file.
The function returns the IFC file name as a string in the environment variable called "callResult".