Passing properties as a part of the endpoint

Hi all..

I use JSON format for the request and response for a Web Test case. So how would u use XPATH in this? Does XPATH work for JSON? I m a Novice, excuse if this is silly.

Now..

I wanna append the values returned from a response of a HTTP Request test step, to be a part of an endpoint of another HTTP Request test step. I tried by selecting "Endpoint" as my target but its replacing the complete end point. I need to append only the value. Help me out or list the steps to do this..

I tried, to select a HTTP Test step as a source and select the property as the value from Response, then set another HTTP Test step as the target with its endpoint as the target property.

What i need is, juz append the value from the source as a part of the endpoint, say www.google.com/{the property}

How to do this? Is it possible in soapUI? If so, pls let me know the steps!