[galaxy-dev] Command tag in Galaxy

Hi, I have been trying to do nested if-else and use logical operators to decide the executable to be called and the parameters passed to it, in a tool xml file. Is it possible to do so in Galaxy tool files? How? I have been getting errors in parsing the nested if-else. Thanks in advance. Regards, Sumedha -- Sumedha Ganjoo Graduate Assistant, Department Of Computer Science, University Of Georgia, Athens, GA , USA