var [num] = [rand:2]
If
IsVar [num] [=] [0]
Then
Inventory [player] [add] [reward1] [1]
ElseIf
IsVar [num] [=] [1]
Then
Inventory [player] [add] [reward2] [1]
ElseIf
IsVar [num] [=] [2]
Then
Inventory [player] [add] [reward3] [1]
Else
EndIf
If this is what you mean it just gets a random number between 0-2, and then gives a certain item for each number