Hello,
there is a new PV class that provides access to SER select variables. A list with available selects can be found at: http://sip-router.org/wiki/cookbooks/selects/devel
Therefore, all Kamailio modules relying on PV framework can get access to select values without any change. See example of usage from config at: http://sip-router.org/wiki/cookbooks/pseudo-variables/devel#selects
Cheers, Daniel