Dynamic display of sections.
The Section Expert offers flexibility when formatting different sections of reports. You can turn each option on or off, or you can use a Boolean condition to do this.
A formula button is located adjacent to most of the options in the Section Expert. The options on the Common tab of the Section Expert are on or off properties so the formula entered must return a Boolean value. The result of the formula you use for conditionally formatting the field must return a True/False or Yes/No answer. If the answer is Yes, then the formatting option is applied. If the answer is No, then the formatting option isn't applied.
In the option on the Color tab is an Attribute property. An Attribute property allows you to have a number of alternatives attributes. The ability to apply formatting to sections conditionally increases the power and flexibility of reporting. You can even conditionally apply background colors to sections.
For example, you have a standard sales report with customer information in the Details section. For customers with a poor track record, those with less than $25,000 in sales, you also want to include additional information. You could insert a second Details section, place the optional information in it and format it to only display in the desired situations. The first Details section, Details a, would have the standard information and would always be displayed. But for Details b, with the optional information, you would use the Suppress property with a formula.
Remember you're suppressing a section. Since you want to display the data in Details b only for customers with poor performance, you must suppress it in the opposite scenario. In this example, because you want to display customers who had less than $25,000 in sales, you want to suppress those customers with sales higher than $25,000 using the formula {Customer.Last Year’s Sales} > 25000.