[Serusers] about URI request

hi

i want to distribute tow alieas users use different pstn gw with same area code. i add below in my cfg.but it doesnt work.any advice for me ? many many thx.

if (uri=~"^sip:0060.*@(my.test.com)"){ strip(2); prefix("21"); rewritehostport("1.2.3.4:5060"); # This is where PSTN Gateway installed route(1); return; }; if (uri=~"^sip:0060.*@(your.test.com)"){ strip(2); prefix("22"); rewritehostport("5.6.7.8:5060"); # This is where PSTN Gateway installed route(1); return; };