Get Templates Dropdown Sort Order

Hello experts.

Is it possible to sort the template list in the "Get Templates" form ($[$BOY_7.0.0])? I know that the SQL should be 

SELECT Code, U_BOY_NAME FROM [@BOY_TEMPLATE] WHERE U_BOY_TYPE = 60110 ORDER BY U_BOY_NAME ASC

with a dynamically populated U_BOY_TYPE instead of the hard coded "60110"?

If possible, what should the Validation trigger settings be?

Thanks in advance for any assistance. It will be greatly appreciated.

Jennifer