I hope someone can help with this. I'm under the gun to get this done... the concept of what I have to do is... I have a form with several fields on it. all of the data, once submitted, goes into 1 MySQL table called t_Obligors. 1. the user will enter an id (obl_UniqueID) into an input field 2. as soon as they enter it I want the data in the field to be verified that a prior Unique ID does not exist (probably onChange event) by searching the t_Obligors table (I have a sql query called cldmGetObligorUniqueIDs) at this point obl_UniqueID is not the primary key and I'm not sure if I want it to be because the database was not originally set up with this field so it would be a lot of work to go back and re-populate data. (I'm also under a tight deadline) 3. to do the actual event I was using Javascript (this one would occur on the onChange event) for my form validation since that's what I know and I don't have time at this point to learn something new since it needs to be done very quickly. 4. if there's a match they get a message saying that ID is already in use so please enter another Here was a thought I had been playing with: below sets an increment, i, and attempts to populate an array for future use in my Javascript but I cannot get the array to increment, I don't even know how to refer an array (or whatever it's called) in Zope. <dtml-call "REQUEST.set('i', 0)"> - sets increment to zero <dtml-in clsqGetObligorUniqueIDs> - loops through the query and gets all Unique IDs <dtml-call "REQUEST.set('listofids.[i]',obl_UniqueID)"> - trying to set the array with unique IDs <dtml-call "REQUEST.set('i', i+1)"> </dtml-in> this was only one thought, I'm open for suggestions... Thanks!