email signature script

Hi,

I am trying to add a field in a signature script.

I am currently referencing the mobile and fax field of a user in Active Directory I want to add the Home field as well but I keep getting a error   "Windescription is: Variable must be type 'Object' "Error:Object referenced outside a "With" Statement.

I am adding the line the same way I have done the other fields.

What Am I doing wrong?

Thanks