Simply type the name of the variable in the placeholder which is show in the upper left of your picture.
You only see the variable names when you click into the placeholder, otherwise you will still see the value, not the variable name.
The pic below was taken while the focus/cursor was in the placeholder for the vertical marker - thats the reason you see the variable name instead of the value.
EDIT: Stuart has beaten me in time. Guess we need a notification like "Somebody is already about to answer ..."
EDIT: Stuart has beaten me in time. Guess we need a notification like "Somebody is already about to answer ..."
Don't worry, I did the same earlier. There was nobody replying to a thread, so I started typing in an answer ... then I got distracted. When I dragged myself back on task and posted, lo and behold, there was your answer!
I don't think it's too much of a problem, as answers can vary in quality, quantity, and having the right approach for the OP.
I don't see much of a problem in multiple answers, too.
I was just thinking of a forum I frequent where an unobtrusive notice is shown when someone is answering.So you can decide whether you want to wait for this answer before you make your contribution.However, the notice there is so unobtrusive that it is regularly overlooked 😉
On the other hand a I came across a very restrictive behavior in another forum - there a thread is blocked if someone is answering and you have to first state how long aproximately it will take you to answer. Quite tedious, this forum and therefore not visited too often by me 😉