[OpenSIPS-Users] get expires when I login to sip server

[Nick]

Hello

I want to get expires with eyebeam.

So, I setup this function. $var(x) = $(ct.fields(expires));

But, When I register to opensips Server, I always get expires =0.

When I logout opensips server, I also get expires =0.

Why?? When I register to opensips Server,  why expires time is zero, not 
3600??

Thanks for your help.

Nick