How can i pass NULL value in Store Procedure?

Hi guys,

I am calling one store procedure from MS SQL Server 200, i had create the follow layout:

But i need pass to MSQL SEVER the CPF = NULL, when i execute the procedre the CPF send empty value (not null).

I already changed Communication Channel parammeter "Interpretation of Empty String Values" to "Null Value" value.

But the interface always send empty string instead of null.

How can anybody help me, please?

Edited by: João Noberto dos Santos Junior on Jun 24, 2009 5:00 PM