[LoadUIWeb] Parameterizing URL part ending with query strings

I have a URL request that looks like this one:

 

GET /BravaServer/search/searchindices/0e797596-b417-41f0-9841-73947cd4198f?sessionid=null&clientid=41986811&bravaserverurl=http://prf-be-01/BravaServer&dojo.preventCache=1398946532256 HTTP/1.1

 

I’m trying to parameterize that GUID value in the request, but it doesn’t seem to work:

 

GET /BravaServer/search/searchindices/@requestId?sessionid=null&clientid=41986811&bravaserverurl=http://prf-be-01/BravaServer&dojo.preventCache=1398946532256 HTTP/1.1



Under important notes in this Parameterizing URLs - Important Notes it says something about not being able to add an extension to the end of the variable, but I'm not.



Thanks.