I have a control tied to a query that in a report returns several values. I am trying to use conditional formatting to shade the highest value in the field. I have used bracketed expressions, not field values, to accomplish this. I understand from Access help that the conditional formatting expression must result in a true or false condition. I am asking it to compare field values and cant write a statement using dmax (or other) function that returns a true/false result. Can I write a function like this and if so what would it be? All good advice appreciated!!!