Use variable in Teamcity build config name

I'd like to include a variable value in the teamcity config name. For example if my config is called:

"[Patch release 4.3] - quick build"

I'd like the "4.3" to be taken from a variable, e.g %release.number%.

This means that if I have 6-7 configs that all refer to 4.3 I can update this in one place and they can all be consistent

Thanks