PLS HELP simulate eshape antenna from sergey n makarov book

help me.. i cant seem to simulate it.. i attached a copy of the script.. if you manage to simulate it please teach me the steps or the change in codes..

instruction from book says that

1.run eshape.m
2.export mash parameters
3.save file as eshape.mat (which file i don't know)
4.run patchgenerator1.m
5.run rwg1.m
6.run rwg2.m
7.run rwg3.m
8. get around 1800MHz of return loss

if theres anyone who can get the result please pm me