Edit your commands.cfg and add the following
define command { command_name check_jboss_messaging command_line $USER1$/nagios-plugin-jbossas7/check_jbossas7.py -H $HOSTADDRESS$ -A $ARG1$ -P $ARG2$ -u $ARG3$ -p $ARG4$ -q $ARG5$ -W $ARG6$ -C $ARG7$ }
(add -D to the command if you want to add perfdata to the output) Then you can reference it like the following.