$str.equals problem

[redmiru]

1. Brekeke Product Name and version:
Brekeke SIP server, 2.4.8.6

2. Java version:
1.6

3. OS type and the version:
Windows Server 2008

4. UA (phone), gateway or other hardware/software involved:

5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :

6. Your problem:

(1) I want to drop the call if From username(last 4 digits) is same with To username(last 4 digits)
(2) From filed: <sip:1234567@....> To field: <sip:9874567@...>
----> MUST drop
(3) I was planned like this

Matching Patterns

$request = ^INVITE $str.equals($str.substring($geturi(From), 7,11), $str.substring($geturi(To),7,11)) = true

Deploy Patterns

$action = 403

But it doesn't work

(4) how to plannig Dialplan? please help. ;(

[hope]

matching
$request = ^INVITE
From = sip:.+([0-9]{4})@
To = sip:.+%1@

deploy:
$action = 403

[redmiru]

Thank you Hope! It works!