Perhaps I wasn't too clear with my previous post. I can send data to the scrolling text display by using curl, as follows:
curl -X POST "http://[wled ip]/json/state" -d '{"seg": [{"n": "Text to Display"}]}' -H "Content-Type: application/json"
I was wondering if there was a way to do this in Yule Log, eliminating the need for a script to do it...