[eesh]

pawn Код:

if(strcmp(usage, "store", true) ==0)// correct me but isnt store being checked here already?
{
    if(sscanf(params, "s[24]s[32]",usage,item))//you need not have two as the if already checks store :S
    {
        SendClientMessage(playerid, COLOUR_GREY, "Usage: /trunk store [item]");
        SendClientMessage(playerid, COLOUR_GREY, "Available Items: Weapon, Weed, Cocaine, Money, Armour");
    }

If you post your command i will rewrite the fixed version for you.