The Expression Builder is a screen designed to help you write expressions and formulas in Supplemental Developer. This Chapter provides a description of its features and how to use them. The Expression Builder provides a single field where you create the expression. You can choose to type the expression directly into the window yourself or you can use the tools provided by the builder to help you with using operators and functions. An expression must be written in the proper syntax in order for a computer to understand it.
Proper syntax means the expression follows all of the rules set up for expressions.
Proper syntax does not guarantee that the expression or formula will yield the correct result. You could have an incorrect expression which is perfectly correct with regard to its syntax. The Expression Builder automatically checks the syntax of your expression when you click on OK to save your work. Additionally, at anytime you can click on the Test Synta x button. If there is a syntax error, a small window will pop up telling you about the error and your cursor will be placed in the expression at the point of the error if the checker is able to determine exactly where the error occurs.