Silverlight 4 variables into asp/HTML form with hidden fields

[iller]

I'm currently trying to integrate a payment system in a Silverlight 4 application.The thing is, that the way of sending information to the bank has to go via a HTML form with hidden fields, that's being sent to a certain website using POST. In the future there'll have to be SHA-hashing added to the entire process, but first I'd like to get the HTML form working.So, long story short; The variables within the Silverlight 4 shopping application like UserID, CostAmount, ProductID should be transferred into the HTML form dynamically.Could you please help me out? Thanks in advance!