SAP HCI Cannot create Content Modifier External Parameter in Web UI

I am not able to create an External parameter for the Content modifier. The dropdown is not enabled.

I followed the URL External parameter not working HCI Web with a user who has the same issue. The recommendation was to create the external parameter in Eclipse and deploy that.

So I created this in Eclipse:

Then I click on the Externalized Parameters tab (in between the Console and the Remote Systems tab).

Then I sync with the Editor, add the values, and then save the parameters.

I execute checks for the flow and make sure everything looks good. Then I deploy the integration content from Eclipse. I check the deployment in the console and tasks view and I get no errors:

However, when I create the external parameter for the Content modifier in Eclipse and deploy, I still do not see the external parameter that I created in Eclipse in the Web UI.