[Asterisk-Users] GoToIf Regular Expression

[Adam Robins]

I am trying to test whether a callerid number is a valid ten digit
number.  I'm a total novice with regular expressions.
I've tried:

exten => s,n,GotoIf($[${CALLERIDNUM} : \d{10,10}]?label)

But CLI gives an error.  Can someone please show me what the correct
syntax would be to do this?

Thanks,
Adam

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