Change IP in a SIP INVITE

Thank you ! but something doesnt work here the change I made .. :

 

 

when SIP_REQUEST {

 

if {[SIP::method] == "INVITE" && [SIP::uri] contains "10.215.186.38" }{

 

eval [LB::select]

 

set ipSelected [string map "10.215.186.38 [LB::server addr]" [SIP::uri]]

 

set ip [getfield $ipSelected "%10" 1][SIP::uri]

 

 

I'm not sure about the last [SIP::uri]

 

 

Also, is it possible that each time a make a change in an iRule that I have remove the iRule from the VS and put it back ?