Defines script will be invoked at update line by line. Last object of this script will be measure value.
PowerShell syntax allows you to define a whole valid script in one line, but in favor of customization and readability, please do break them down to reasonable line width.
If your script is too long, it is best to write them in script file and set script file path in ScriptFile option.
ScriptFile
Specify file name (if script file is in same folder as skin config) or direct path to script file.
Script files can only be used in parent measure. And only script in script file is invoked, if you both set ScriptFile and Lines, script defined in Lines will be ignored.
Unlike Parent measure, there's no measure value to be updated so you don't need to define Update function.