New Global Variable "MC Oas"

Hello, Good evening 

Here I made a /home system 
 (https://mcreator.net/forum/64957/tutorial-mcreator-20204-1152-make-home...)
but there are too many "global variables" so could you add a way to create them directly from the procedures (this will reduce the number of global variables, optimize the number of variables, more practical). 

Thanks for your answer