[galaxy-dev] Problem with <command> tag

Hi, When I put the following in my tool xml <command>perl rpc_client.pl -u http://hiv-dev.lanl.gov:8081/tools/rpc -m formatconverter.convertFormat "sequencesText" "$sequence"</command> And run the tool, it only execute " perl rpc_client.pl "sequencesText" "$sequence" ". Those options " -u http://hiv-dev.lanl.gov:8081/tools/rpc -m formatconverter.convertFormat " are ignored. How to fix this problem? Thanks