Undeclared Identifier, Only found solutions, not reasons

[LuxCkrown]

Hey everyone, i've been browsing for a fix to my problem
1>c:\documents and settings\user\d esktop\judis_re pack\judis repack\judis repack\maplesto ryserver\invent ory.cpp(386) : error C2065: 'amount' : undeclared identifier
I've found some solutions but I'm not sure how they pertain to my problem. If possible, would there be any general methods of resolving such undeclared identifier problems? This is the string, I'm a complete beginner so i'm really bad a this. Thanks


void Inventory::take Item(Player* player, int item, int howmany){
for(int i=0; i<player->inv->getItemNum() ; i++)
if(player->inv->getItem(i)->id == item){
if(player->inv->getItem(i)->amount>=howman y){
Item* item = player->inv->getItem(i);
item->amount-=howmany;
howmany=0;
if (ISSTAR(item->id)) amount = item->amount;
if(item->amount == 0){
InventoryPacket ::moveItem(play er, item->inv, item->pos, 0);
player->inv->deleteItem(i );
}
else
InventoryPacket ::moveItemS(pla yer, item->inv, item->pos, item->amount);
break;
}
else{
Item* item = player->inv->getItem(i);
howmany-=item->amount;
item->amount=0;
InventoryPacket ::moveItem(play er, item->inv, item->pos, 0);
player->inv->deleteItem(i );
}
}
}

[Savage]

@LuxCkrown
Is amount member of the Inventory class?

PS:Please use code tags (# button)