https://community.cloudera.com/t5/Support-Questions/How-to-declare-key-and-value-for-post-method-in-InvokeHTTP/m-p/191082#M153171 <P><A rel="user" href="https://community.cloudera.com/users/14967/narasimhavarman.html" nodeid="14967" target="_blank">@Narasimma varman</A></P><P>The "Attributes to Send" property allows you to enter a java regular expression for the FlowFile Attributes you wish to send as headers:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="15857-screen-shot-2017-05-30-at-84210-am.png" style="width: 2666px;"><img src="https://community.cloudera.com/t5/image/serverpage/image-id/18443iE52AC0CED2669453/image-size/medium?v=v2&amp;px=400" role="button" title="15857-screen-shot-2017-05-30-at-84210-am.png" alt="15857-screen-shot-2017-05-30-at-84210-am.png" /></span></P><P>Looks like what you really want to use are custom dynamic properties:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="15858-screen-shot-2017-05-30-at-84526-am.png" style="width: 2676px;"><img src="https://community.cloudera.com/t5/image/serverpage/image-id/18444i204040BA2E6B7A1F/image-size/medium?v=v2&amp;px=400" role="button" title="15858-screen-shot-2017-05-30-at-84526-am.png" alt="15858-screen-shot-2017-05-30-at-84526-am.png" /></span></P><P>You can add as many dynamic properties as you want by clicking the small "+" icon in the upper right corner of the properties tab on the invokeHTTP processor.</P><P>Thanks,</P><P>Matt</P> Sun, 18 Aug 2019 07:29:41 GMT MattWho 2019-08-18T07:29:41Z