Hello,
#1 you need to define the paths before including their contents.

#2 you can define a path for a subfolder contained on the folder the main script is contained on by its name.
Code:
#define PRAGMA_PATH "models"
#define PRAGMA_PATH "scripts"


You can go up the folders by "..". I have my module folders on the same folder of project folders and I define my paths by:
Code:
#define PRAGMA_PATH "..\\modules\\math.h"


Note that WED levels need to be on same or higher folder than the main script. Otherway you will not be able to asign it on map properties.

Salud!