How to add an external Alias for the Fiori Launchpad

Hi,

I tried to ask this question in the UI5 Channel - unfortunately without success this time. I hope this is the right channel and anybody.

I have a Problem with configuration an external alias to the Fiori Launchpad. I want to provide Access with an external alias like '/kdn/flp/FioriLaunchpad.html'. I have done all the steps described here and the URL is working.

But I just get an empty page, because the browser tries to load the UI5 resources from the 'normal' URL like '/sap/bc/ui5_ui5/ui2/ushell/resources/' and the system returns just the logon-page for the resources.

Is there any possibility to change this standard-url to my external alias?

The request:

The reason (maybe):

Thanks for your help!!!!!

Stefan