Kitchen Display tickets disappeared after changing to {ORDER STATE MINUTES:Display}

I am current using {TICKET STATE MINUTES:Status} to track each ticket age, and I’d like to change to {ORDER STATE MINUTES:Display}, so ticket payment state don’t change the ticket age on kitchen display.

However as soon as the apply the change to {ORDER STATE MINUTES:Display}, all the tickets on Kitchen Display disappeared!

When I change {ORDER STATE MINUTES:Display} back to {TICKET STATE MINUTES:Status} , all the tickets appeared on the screen again.

Any idea why? I did not change anything else apart from TICKET and ORDER STATE MINUTES tag.

Thanks in advance.