[Freeswitch-users] regex help

[babak yakhchali]

Hi
How can I use playandgetdigits to get 0 or 8 numbers? I mean it should be an
empty string or 8digits long.
I tried this
play_and_get_digits 0 8 3 7000 # file1 file2  number ^$|^d{{8}}$
but it's not passing empty strings
thanx
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