PLAYER_EVENT_ON_GROUP_ROLL_REWARD_ITEM count issue

[icaca]

PLAYER_EVENT_ON_GROUP_ROLL_REWARD_ITEM = 56, // (event, player, item, count, voteType, roll)
cancel = RegisterPlayerEvent( event, function )

I use Yogg-Saron to test the drop of Fragment of Val'anyr. It should be 1 every time, but the value obtained by count is different every time.

Icaca won Fragment of Val'anyr (x24) with NEED (1)
Player GUID: 2 voted: NEED (1)
ItemGUID: 1344123
ItemId: 45038
ItemRandomPropId: 0
ItemRandomSuffix: 0
ItemCount: 1
TotalPlayersRolling: 1
TotalNeed: 1
TotalGreed: 0
TotalPass: 0
ItemSlot: 6
RollVoteMask: 7