need help about Men of War Assault Squad 2 - Men of War Orig

[pharaon]

i would like to hack the anti tank grenade but i don't to know i can do that

i search for the visible value and i got the address i found it and find out what writ to it

got that
originalcode:
mov [ecx+000002B4],eax

and i did that with script
newmem:
mov eax,00000064

so the visible become 100 but still the i get out of grenade like it's not the real value of it

so how can i cheat that