Hi, I want to ask if it is possible to evalute the value of some tool checkboxes within this cheetah templates. I want to do something like this. A certain tool has the ability to skip some test (e.g. --skipsomething). So I added a checkbox option for the user and depending of his selection the commandline should be: tool.py $input $output or tool.py $input --skipsomething $output <tool name="tool" id="tool"> <command interpreter="python"> tool.py $input #if $skip.value == "true" #--skipsomething #endif '$output' </command> <inputs> <param name="input" type="text" label="Full path to source file"/> <param name="skip" type="boolean" label="skip something"> </input> ... Or is there an easier way to achieve this without cheetah? Thx for help and haveaniceweekend ;-)