WHMCS Integration - Show widget only when logged into WHMCS

I am in the process of a site redesign and have come to a crossroads with the WHMCS WP Integration plugin and some limitations with it. What I would like to do, is to have a widget show (in a sidebar) if and only if a client is logged into the WHMCS backend. This is not WP as a subscriber or anything, but in WHMCS as a customer. I have looked all over for methods to try and make the widget show only when the user is logged in (again, to WHMCS) and not any other time. WHMCS uses a specific kind of coding (http://docs.whmcs.com/Template_Syntax) and WP of course, uses another. I have installed widget logic, but I cannot find the proper code to put into the logic area of the "text" type widget that I've added to the sidebar.

Can you advise... thanks.