When you are creating a HTTP operation component, you may see this checkbox called “Is Replacement Variable” in either the Header or Resource Path section?
Once this checkbox is ticked, you are allowed to put in a dynamic value from the Parameter section:
Your final process will probably look like this:
This will present a problem. The document from the “Export Accounts” map will not go through the HTTP Client connector. To overcome this issue, you have to specify the Username (Header) and Event (Resource Path) in the User Defined Document Property. See the example below:
The User Defined Document Property name must be the same with your Replacement Variable name. Hope this helps!