Why is my variable not working?
The variable you use must be selected from the variables list
When you go to use a variable in a message, you must select it from the variables list. Typing the name of the variable doesn't work.
Checking it in the preview.
When you are previewing your bot in the bot builder, it will show the variable name because there is no stored data. This is not what the bot will look like on your live site.