Hi everyone. I'm trying to use a <param type="select" display="checkboxes" multiple="true"> in a tool, but galaxy doesn't seem to work correctly if I "unselect all". This is what I have: <param name="test" type="select" display="checkboxes" multiple="true" label="A test"> <option value="a" selected="true">A</option> <option value="b" selected="true">B</option> <option value="c">C</option> </param> If I "unselect all", execute the tool, and then try to re-run the tool by examining the output dataset, parameter A and B are selected, but they shouldn't! When the history is converted to a workflow this breaks the intent of the user! Second problem: how do I test for single values in the <command> template? Right now I'm (wrongly?) doing: #if 'a' in $test.value: ... #end if but it breaks badly when all values are unselected ("$test.value" does not exist, and thus cheetah fails to compile the template). My solution would be: #set $foo = str($test).split(',') #if 'a' in $foo: #end if but this is _incredibly_ ugly. When I use a multi-select, I often want to see if there's some single parameter in it. Any suggestions?