Change User Profile page title to display a field

Can anyone tell me how to change the User Profile Title text field on the User Profile Page Title tab to display a field rather than the username?

I know that I can enter %s to display the username directly, rather than what's defined in the default_language.php file. But supposing I wanted a different field? For example, if I had a cb_company field that contained a company name and wanted to display that.

I'm guessing there's a format I can use to select specific fields?

Thanks

Ken

Discovered the answer myself. For anyone else, just put the field name in square brackets.

e.g.

[cb_companyname] Profile Page

Ken