Set Value with Scripter from the selected fields popup menu
This works slightly differently to Scripter from the row no menu in two ways
Final Value is Applied to All Selected Fields
In a similar way to Correct Filename from Metadata, the script is evaluated and then the result is applied to all the selected fields.
Selected Cells can be referred to in the script
The selected cells themselves can be referred to with the selectedcell script field
For example
and use Set Value With Scripter to uppercase the selected values
resulting in