How do you Offset/Shorten Gap's decimal place?

I used offset -1 in Irtvo but I can't seem to find the option to shorten the decimal place in Gap

{0:0.0} for 1 place beyond decimal. If 2 spots would be {0:0.00}

There's a chance it won't work for gap as it may be a text value (since it can also return things like "Leader" and "+1 Lap"). But I am not sure anymore how we implemented it. If it's just the time then you can format it like Jason posted. Otherwise bind to 'livegap' or something.

That worked on MPH but not on gap and livegap, still x.xxx