hi
as 1oser said, you need to have 4 triggers(not 3).
the first trigger with the amount default_(laya or backa YOU DID NOT SAY WHICH) and with the condition
and selections name contains "1"
then the second trigger with the amount default_(laya or backa YOU DID NOT SAY WHICH)*3 and with the condition
and selections name contains "2"
and so on up to your maximum number of selections
mcbee