If you want the help provided to you by the developers to be more effective in the form of working code, then it will be better if you attach a link to your post to the "file.yml" you are using for efficient testing and so as not to encounter distortions in the data structure when directly publishing data excerpts from a file.
It would also be a good idea to add links to reference documentation that describe various variations of the data structure of the file with the "yml" extension.
Apparently, the usual built-in mIRC tools will not be able to read and get the result from this file type the way you want.
Either will have to develop a third-party application for reading and writing "yml" files that will be able to interact with mIRC, or will need to leave a request for the required functionality.
