[Users] How to clear the destination set for redirection?

Hello, My senario is the following: userA is registered twice so after lookup I have $ds = Contact: sip:userA@10.0.0.1:5060, sip:userA@10.0.0.2:5060 I want to add a prefix and redirect to 10.0.0.9, so I do prefix("160000"); rewritehostport("10.0.0.9:5060"); xlog("L_DEBUG","$ds\n"); sl_send_reply("300", "Redirect"); and I get $ds = Contact: sip:160000userA@10.0.0.9:5060, sip:userA@10.0.0.2:5060 The second uri is causing a problem, so I need to remove it before the redirection. I tried resetdsturi() but it did not affect the destination set. Is there some way to keep only the first uri? Maybe some way to clear the destination set before doing the redirection? thank you George Disclaimer The information in this e-mail and any attachments is confidential. It is intended solely for the attention and use of the named addressee(s). If you are not the intended recipient, or person responsible for delivering this information to the intended recipient, please notify the sender immediately. Unless you are the intended recipient or his/her representative you are not authorized to, and must not, read, copy, distribute, use or retain this message or any part of it. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses.