I have a spreadsheet that get used in a number of countries.
Any I aim to keep the amount of VBA to a minimum.

There is current year cost data sorted via a pivot table into category totals.
Then the user is given the option to use this data in next years forecast.
So I would like to have a "TRUE or FALSE" value in a field from which I can
then manipulate the pivottable data.

The advantage of using true or false is that it changes language with each
user to their default.
Trouble is that I would like to make it a bit more friendly by using data
validation.
Each language's "Yes or No" can be got from the VBA XL constants for yes and
no stored in named cells in a hidden worksheet each time the spreadsheet is
opened. The issue is to show these named text values in the Validation list
but store TRUE or FALSE in the cell.

Can this be done?