[SR-Users] registrar lookup with different URI

Hello I want the registar module to lookup a user with a different 'name' as the RURI. We have the extension & domain in variables, but the RURI is ext@ip-of-server, e.g. 200@1.1.1.1<mailto:200@1.1.1.1>, while we want to perform the lookup for 200@somedomain.tld<mailto:200@somedomain.tld>. We have somedomain.tld in a header, so we have it in a variable. However, if we perform the lookup like this (using Python module): lookup_result = KSR.registrar.lookup('location') We get a negative result, and the debug logs show that it tries to locate 200@1.1.1.1<mailto:200@1.1.1.1> - which makes sense. So according to docs you can specify an URI, however when I do this: lookup_result = KSR.registrar.lookup('location' &#39;200(a)somedomain.tld&#39;) lookup_result is "False" and the function is not executed, according to docs because it cannot obtain the parameters for this function. How can we force the registrar module to lookup a different user?