[SR-Users] Event route websocket:closed and function unregister

Hello all! I have *event_route[websocket:closed]* configured. By using *$si*, *$sp* variables and data from special hash table I can figure out information about account that was disconnected. I'm trying to use *unregister* function against but with no luck. 1. I'm creating variable which contains (as an example): " sip:100-test@127.0.0.1" string, where "100-test" is username. 2. lookup("location", "$var(user_uri)") - runs fine. I'm getting a match and lots of useful variables including *$ruid* are being set: */usr/sbin/kamailio[27169]: DEBUG: registrar [lookup.c:256]: lookup_helper(): contact for [100-test] found by address* 3. But unfortenately *unregister* with same variable does not work. unregister("location", "$var(user_uri)"): *DEBUG: <core> [core/parser/parse_uri.c:1282]: parse_uri(): bad uri, state 0 parsed: <you@> (4) / &lt;you(a)kamailio.org &lt;you(a)kamailio.org&gt;&gt; (16)* *ERROR: <core> [core/parser/parse_to.c:81]: parse_to_uri(): failed to parse To uri* *ERROR: registrar [save.c:1040]: unregister(): failed to extract Address Of Record* I was trying to manipulate *$var(user_uri)* variable's content but could not make it work. It's interesting that variant with *$ruid* - *unregister("location", "", "$ruid")* will work but unfortenately it works only with *modparam("usrloc", "db_mode", 1)*: *ERROR: usrloc [urecord.c:655]: delete_urecord_by_ruid(): delete_urecord_by_ruid currently available only in db_mode=3* I was wonderring if someone could tell me if I'm just using *unregister* function with uri parameter in wrong format or there might be some other problem. Thanks a lot!