Increasing Tank Ammo - not working HELP

[bucephalus]

Hi guys,

I'm newbie in modding and tried to increase the veteran tiger ammo capacity. So I edit the "veteran_tiger.def" file under:
"-vehicle\tank_heavy\veteran_tiger\"

And made some changes to this code:

{extender "inventory"
{box
{size 10 14}
{item "bullet88 ap" 150}
{item "bullet88 fg" 127}
{item "bullet88 apcr" 110}
{item "mg42" filled {user "mgun"}}
{item "ammo mgun" 9925}
}
}

It does not work. The vet-tiger have it's default ammo loadout.

However when I apply that increased ammo to "pz3f.def" - it worked.

How it possible? My changes to "Veteran_tiger.def" - not working while to "Pz3f.def" working properly.

Please kindly advise,

Thank you & best regards,