[openbox] command contains $ and &

[y z]

1.command contains $
<action name="Execute">
     <command>kill $(pidof tint2)</command>
</action>
do not work

<action name="Execute">
     <command>kill 6040</command>
</action>
works, pidof tint2 is 6040


2. command contains &
<action name="Execute">
    <command>rdesktop xxx.xxx.xxx.xxx -u administrator -p
xxxx&xxxx</command>
</action>
fail when reconfigure

thanks in advanced
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