Access Conditional formatting

[mailboy]

I had a very simple Conditonal format. I build a data base for a trucking co. i have to match the milage. From starting odom to ending odom which subtrcts the two just fine. The other is adding up the milage by state which works fine. I had a flag on there which would color the milage by state red. But, this has seened to stop working all of a sudden. All of the conditional formatting is still the same. I'm just starting with access any idea's?
Thanks

[June7]

Need more info. What do you mean by 'color the mileage by state red'? You are using textbox Conditional formatting, not VBA code? Show the expression. Can't just stop working, something must have changed.