Hi, I have a question on revenue recognition. Under US GAAP, if the license w/support fee has a fixed and variable portion, I think that this is one unit of accounting and so, the total fee amount is not fixed. Since the amount is not fixed, does this mean I take revenue only when I bill out the license amount? Because I think that the other 3 criteria (arrangement, delivery occurred, collectible) are met when I finish calculating the final monthly license fee and issue the bill. Any help is much appreciated. Thanks!