FreeSwitch Regular Expression not functioning as expected

Hey experts,
So i am very new to using regular expressions so please excuse my miss understandings.
So what i have is the expression below.  What i am trying to accomplish is...
IF a call from (+1 or 1) optional (999-999-9999) comes in then prepend Test- to the caller ID name.
__________________________________________________________
IF MATCH Condition(All,Standard Information[Caller ID Number] = ^(\+1|1)?(9999999999)$,SIP Header Information[From: Display] = (.*)$) THEN
Export Variable[effective_caller_id_name]=TEST-$1
AND Continue
__________________________________________________________
The question is with the variable.  In my example it works as desired.  but the variable i had to use was a $1.
My understanding of Regular Expressions would have told me.
$1 =  (\+1|1)
$2 = (9999999999)
$3 = (.*)

Each $number equals a value within the brackets.

So why in my setup if i use $1 do i get the desired results of "Test-Caller ID Name"
If i use $3 like i would have thought i should do i only get "Test-" no name or number to it.

Really just looking to see if anyone can clear this up for me.  I have read all over online and everything i can find tells me i should have used $3 to get the results and $1 should have returned non desired results.

Thank you
tsukrawAsked:
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Dan CraciunIT ConsultantCommented:
From what I see, you have 2 regular expressions and each has groups, so:
$1 =  (\+1|1)
$2 = (9999999999) and then

$1 = (.*)

Basically you're getting the first group from the second expression.

HTH,
Dan

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tsukrawAuthor Commented:
put me in the right direction.
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Regular Expressions

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