Expression Editor

How do I open the Expression Editor?
From any input box where you can apply an expression, click
Open Expression Editor
 Icon: View Designer Open Editor Icon.
Use the
Expression Editor
to create or edit lengthy or complex expressions in a resizable window.
Most expressions consist of one or more tag references combined with numbers, mathematical operators, or built-in functions. However, a tag is not required in an expression.
View Designer
 checks the expression syntax as you create the expression. A red
outline
appears around the expression when invalid syntax is detected. The red outline disappears when the syntax becomes valid.
View Designer
 also verifies the syntax for all expressions in a project before it is downloaded to the HMI device. In addition, it verifies that tag references exist in the controller projects. It also verifies that the property of a graphic element referenced in an expression exists in the screen where it exists. If there are invalid expressions, the download process stops, and the invalid expressions appear in the
Errors
window. Verify expressions any time during the project development process by using the
PROJECT > Verify Project
 command.
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