How do I remove first part in an import with regex?

[Johannes Buverud]

In the doc it says:

• Extract only first word of text
  (\w*)\W
  "Blue whale" becomes "Blue"

https://documentation.riada.se/insight/latest/insight-manager-s-guide/import-and-synchronization/general-import-concepts

I want something similar. The data locator is on the format characters-backslash-characters, e.g. "TEST\Donald".

I want to remove the first word and the backslash, leaving only "Donald" in this eksample.

I tried several expressions without success, any suggestions?

[Johannes Buverud · Accepted solution]

I got this from Riada support that works:

\\(\w*)