I have the following tool input parameter: <param name="columns" type="select" multiple="true" label="Select which columns to output"> <option>SIZE</option> <option>ES</option> <option selected="true">NES</option> <option>NOM p-val</option> <option selected="true">FDR q-val</option> <option>FWER p-val</option> <option selected="true">RANK AT MAX</option> <option>LEADING EDGE</option> </param> It displays a single select drop-down menu, is this a bug or did I configure something wrong? To check I added display="checkboxes" to the param above and now it displays a multi select but when the form loads everything comes up checked it doesn't obey any of the selected="true"? Is this also a bug or must it be done a different way? regards, Leandro