I would like to construct an enum query using more than one pseudo variable. The result will be a non-e.164 string which is ok for this application. Ideally, it would be something like: enum_pv_query("$rU + $rp"); This would result in the username from the R-URI appended to the port of the R-URI. However, this doen't seem to work and I wind up with 1.2.1.2.5.5.5.2.1.2.1.$rp.e164.arpa. Instead of using the $rp pseudo variable, the string "$rp" is used to form the query. It should be: 1.2.1.2.5.5.5.2.1.2.1.*0.6.0.5*.e164.arpa. where the port 5060 is inserted between the R-URI username and the domain suffix. Is there a different or better way to use the variables within enum_pv_query to construct a query? Thanks.