In Access Project (.adp) 2003, attached to SQL Server 2005 database, I need to capture two variable values from the current form and call a stored procedure using those two values as parameters. I can call the stored procedure,

Private Sub Command20_Click()
On Error GoTo Err_Command20_Click

    Dim stDocName As String

    stDocName = "sInsertStepIntTestSteps"
    DoCmd.OpenStoredProcedure stDocName, acViewNormal, acEdit

Exit_Command20_Click:
    Exit Sub

Err_Command20_Click:
    MsgBox Err.Description
    Resume Exit_Command20_Click
    
End Sub

but can find no documentation on how to pass the parameters. All help is appreciated.