No, but in master (i.e. unreleased) if you defined dependent enumerations and one value of a parent doesn't have a dependent enumeration defined it falls back to show a widget for the underlying data-type. For example:- Car.fuel = ["Diesel", "Petrol"] Car[fuel=Diesel] = ["BIO", "REGULAR"] Selecting Car, Fuel=Diesel would show a list box for "BIO" and "REGULAR". Selecting Car, Fuel=Petrol would show a text box. If you use a template or decision table and leave the textbox empty the constraint will not be included in the resulting DRL. On 21 February 2014 14:57, SrjTx <clickthex(a)yahoo.com&gt; wrote: