https://community.cloudera.com/t5/Support-Questions/How-to-declare-key-and-value-for-post-method-in-InvokeHTTP/m-p/191084#M153173 <A rel="user" href="https://community.cloudera.com/users/14967/narasimhavarman.html" nodeid="14967"></A><P><A rel="user" href="https://community.cloudera.com/users/14967/narasimhavarman.html" nodeid="14967">@Narasimma varman</A><A rel="user" href="https://community.cloudera.com/users/14967/narasimhavarman.html" nodeid="14967"> </A></P><P>Sorry for late response, but I don't get pinged unless you add a comment to my response or tag me in your new answer.</P><P>The dynamic properties expect the the "value" to be a valid NiFI expression language (EL) statement. Otherwise it is treated as a literal value. So i expect what you are seeing is that exact string passed in the nested header or some kind of session rollback, etc...</P><P>Also not sure how you are pulling data using a "POST" method? Shouldn't you be using "GET"?</P><P>Thanks, Matt</P> Tue, 13 Jun 2017 23:36:36 GMT MattWho 2017-06-13T23:36:36Z