How to use credentials in the request header of a REST GET

I have a bearer token for using services of an external party. When I provide this token hardcoded in the request header like below it works like sunshine (for GET, POST en DELETE requests).

But I would like to include this token via something as a Credentials Configuration node, but I cannot get this working. I cannot add this string "Bearer " in front of the token, and if I add it to the password to avoid this issue, the credentials flow variable cannot be defined as header value.

I found this post in which a similar “bonus question” was asked by @LoicCR : I can't use Flow variables as Credentials in Get Request nodes - #10

Unfortunately it was not answered back then (in the same thread).

Is there a way to avoid hardcoding this token?

For completeness: I’m using KNIME 4.7.7 on Windows