Need help (Modify Hunger/thirst) value

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so i have little knowledge on how to acutally code but i was trying to just add /change some values on the server.jar

 

was trying to see if in the server.jar  -->under CreatureStatus

to find the thing for modifyHunger,modifyThirst and see if i could change it to like 10 times the hunger/thirst rate for trying

sadly nothing worked so far even tried out if i could change the value from a mod on the forum [BETA] Player attributes modifications method.insertBefore("if (this.statusHolder.isPlayer() && $1 > 0) {\nreturn this.hunger;\n}");

(the mod was kinda to disabled hunger but i wanted to give it a try)

 

so would be nice if someone had an advise for me  or maybe just what line and what values i need to change