JQuery UI autocomplete combobox modify to insert value if not matched

[login to view URL] This combobox uses values from a select to do a search and match. Everything is fine when you have a match. But when you don't , it doesn't do anything with the typed in string. The task I need is a modification of this, to insert an <option> value containing the inputed string if no autocomplete doesnt find match. eg <option value="inputedstring" selected>inputedstring</option> and return it as a autocomplete match, thus making the input usable. The purpose is so whatever is inputed, gets posted when the form is save, no matter if autocomplete finds a match. I'm tied up in it, can't figure out the best approach, so please help.