As to your web service, try adding a query connection to it in your form. The query parameter (match) looks like it accepts a string, and from the name of the web method (GetEmployeesByNameOrId), I'd think you could enter either a name or an alias (guessing as to what Id is).
So, add a query connection, put in your alias for the match parameter, and see if you get any data back. In fact, when I'm trying to figure out a new web service, I usually drag the whole data source onto my form and add a button that will run a query using the data source. Then I can experiment a bit, get a sense for what data is returned.