How to hide a text message on a card when masked?

I’m trying to give the user the ability to write “OOS” on a card when that card’s location is out of supply as a reminder.

I have tried using a text command tied to a Dynamic Property and I have tried using a Layer (of a .png file that says “OOS”) also tied to a Dynamic Property.

Both of them work, but when the card is masked, you see “OOS” on the back, so the other player also knows what it is.

Is there a way to get a message to the user and not to the other player?

Thanks.

Trait order, make sure your mask trait is below your preferred method of displaying OOS.

Thanks! Dynamic Property above “Mask” and Layer command below it!