RPG Bar Field

how do you define the uppermost field? There is only space for a single number in the box and I've tried a few things.

I'm sure I saw a post for this somewhere a while ago, but I've trawled the first 20 or so pages without success

your search seems not to be working as nothing can be found, even from simple words.

OK, been through all 112 pages and nothing, so it's either blindingly obvious to everyone and I'm not getting it, or something that's not been picked up on before.