How to modify Session-Expires parameters in an Invite Reply?.

Hi,

 

I’m trying to modify the Session-Expires in an invite reply with the next HMR:

 

 

sip-manipulation

       name                                   SM-customer00-SessionTimer

       description                            

       split-headers                          

       join-headers                          

       header-rule

               name                                   SessionTimer

               header-name                             Session-Expires

               action                                manipulate

               comparison-type                         pattern-rule

               msg-type                               reply

               methods                                 INVITE

               match-value                            

               new-value                              

               element-rule

                       name                                   updateST

                       parameter-name                        

                       type                                   header-value

                       action                                 replace

                       match-val-type                        any

                       comparison-type                         pattern-rule

                       match-value                             1800;refresher=uac

                       new-value                               1900;refresher=uac

 

 

And this HMR is assigned to the SIP Interface but is not working.

 

Is any other consideration needed?.

 

 

Thanks in advance.