Actuate 7 PL/SQL Stored Procedure Call Before the Report Run.

Hi Guru's,
I need a small help to call a pl sql stored procedure in actuate 7.
I wrote a code a on component content

-- Code
Function runProc(procName as String, connection As AcDBConnection )
' Insert your code here
Dim statement As AcDBStatement
Dim results as string
' Prepare statement
Set statement = connection.Prepare("BEGIN " & procName & "; END;" )
If statement Is Nothing Then
results = "Failed to prepare statement."
results = results & " " & connection.GetSpecificErrorText( )
results = results & " " & connection.GetGeneralErrorText( )
Exit sub
End If
' Execute sprocoutparam
If statement.Execute() = 0 Then
results = "Stored procedure " & procName & "execution failed."
results = results & " " & connection.GetSpecificErrorText( )
results = results & " " & connection.GetGeneralErrorText( )
Else
results = "Stored procedure " & procName & " execution success."