Below the panel is the Editor window in which you can type an OpusScript expression. You can type one line of code as in the illustration, or any number of lines of code or even call a function in a Script Object:

Below the Editor window is the Error Message Line, which indicates if the expression entered is a valid line of code. In this illustration, userName is an Opus variable, e.g. if the variable contained the name John Smith, the value of the variable in the Set Variable to Expression action would be:

  Welcome to Opus John Smith