Remove/Add Story in Client Repository?

As I understand the commands:

* ADD\r\n
 * <StoryId>\r\n
 * <xml><data></data></xml>\r\n\r\n

is for adding a story to the loaded rundown in the casparCG-Client

* REMOVE\r\n
 * <StoryId>\r\n\r\n

is for removing a story from the loaded rundown in the casparCG-Client

What works:
The CasparCg-Client loads a rundown from an http endpoint in my remote client.
Then the CasparCG-Client builds up a tcp connection to my remote client for sending remote commands.

What is not working:
When sending the remove command to the CasparCG client nothing happens there.

I guess my command could be wrong or there has to be a special format of the storyId or something else.