You can't nest dtml elements within other ones. So you can't write <dtml-in expr="sqlShowTypes('<dtml-var Typ>')"> (as you have found out). But you don't have to - you can simply refer to the variable by its name within a dtml-xxx element. So you could write <dtml-in "sqlShowTypes(Typ)"> (you don't need the "expr=" part). If your sqlShowTypes method is expecting to receive a parameter with the name TypName, then your third try looks like it ought to work. However, we don't quite know where Typ is located. If you set it as a variable to the page's REQUEST, a ZSQL method should find it without you having to pass it as a parameter: <dtml-call "REQUEST.set('TypName',Typ')> I also suggest that you check to see whether your Typ variable actually contains data. You can do this by writing a statement like <dtml-var Typ> at the place where you are trying to send it to sqlShowTypes. Cheers, Tom P [<philipp.robbel@epost.de>] I have been trying and trying the whole day but I still have not found any solution to my (simple?) problem: => I want to fill my HTML DropDown menu with data from a SQL table. My first try was: <dtml-in expr="sqlShowTypes('<dtml-var Typ>')"> : not working (Bad Request, Error Value: ['Typname']) 2nd try: <dtml-in expr="sqlShowTypes(TypName='<dtml-var Typ>')"> : somehow working but my drop-down menu is filled with 5 empty spaces! 3rd try: <dtml-in expr="sqlShowTypes(TypName=Typ)" : again, somehow working but again EMPTY SPACES! I would need a proper statement that would embedd just fine in my drop-down code: <dtml-in expr="...."> <option> <dtml-var sequence-item> </dtml-in></select> </td>