Set a form field value on an SQL variable

[UltimateArco]

I have the following in an SQL 2012 stored procedure:\[code\]V.VoterID IN (SELECT VoterID FROM vts_tbVoterAnswers WHERE AnswerID=@Seed)\[/code\]@Seed is an integer variable in the stored procedure which is supposed to be equal to the value given from an ASP form field named: ddlSeed. How can I connect the SQL variable with the value of the form field?