Yes an no, he could have used the other topic but, he reference it and ask a clear question about it.
I personally don’t have a problem with using another topic to ask such a question. The category may not be the best but it is not worth asking to delete the whole topic.
Don’t forget to include the rest of the instructions re: how to make the format readable.
Also, check your formatting. Usually I type DISPLAY=:0 in capitals. It could just be habit, but a lot of commands are case sensitive. It’s a different command, but just double check.
I’m guessing you found it in this post. I’ve linked it here, just to avoid repeat discussions going on.