Problem while adding a Stored procedure

I have a crystal reports, which takes an ID as an input, which acts as a primary key and foreign key in various tables. Now I have a stored procedure, which I want to join with rest of these tables. The problem is this stored procedure takes its own input, instead of taking the original input of the report. I want the stored procedure to take the original input, instead of creating an input of its own. How can I resolve it.