[Help]Arena win gives items

[venci17]

i want to make on finish of rated arenas to give x items to winners but i'm still trying to learn what's what and i don't understand where to make this modification,can somebody say where i should apply the code

[balrok]

in battleground.cpp

rewardmark()

at the beginning:

if (isArena() && isRated())

{

if (count == ITEM_WINNER_COUNT)

{

RewardItem(plr,YOUR_ITEMID,YOUR_AMOUNT_OF_ITEMS);

return;

}

}