Forms Personalization on Receipts Form

I want to display message for Receipt Write off based on a condition which is true for both domestic and international responsibility but I want to display different message based on Operating unit(domestic/international). Can this be achieved using single forms personalization if I can capture OU(domestic/International) in global variable. How can I conditionally display different message.

Something like If OU is 'US' then message 'A1' else message 'A2'