[asterisk-users] using variables in the shell function

[Israel Gottlieb]

is it possible to pas variables to the shell function

Set(recordingavail=${SHELL("ls
/var/lib/asterisk/sounds/custom/${TOPMENU}")})

im trying to see if a file is available before playing the file

or does anybody have a different idea but not using agi

asterisk 1.6.2.20
thanks
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