Verify expressions

Expression verification checks the syntax of all expressions in your project. It also verifies that the property of a graphic element referenced in an expression exists in the screen where it is used. In addition, it verifies that tag references exist in the controller project.
View Designer
 verifies expressions automatically upon downloading a project. Verify expressions at any time during project development. For example, verify a project if a controller is defined for the project. The
Errors
window displays the results.
View Designer
 identifies invalid expression syntax as an error. The expression does not work for the project when downloaded to the HMI device. Resolve errors before downloading a project to the HMI device.
To verify expressions:
  1. On the
    Menu
     bar, click
    Project > Verify Project
    . The
    Verify Project
    dialog box opens and verification begins.
  2. If there are invalid expressions listed in the
    Errors
    window, double-click an entry to navigate to the source of the error in the project, and make the necessary changes. The list updates each time the verification process runs for the project.
  3. Repeat the verification process until there are no errors listed in the
    Errors
    window.
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