Restrictions and limitations
- You have to specify the Name, Language and Script.
 - The script you specify has to be a valid script.
 - Standard JScript and VBScript limitations exist when it comes to variable naming conventions.
 - Field name cannot start with a number. If it does start with a number, the number will be removed from the field name.
 - Field name cannot start with the underscore character (_), although it may contain any number of underscores within the variable name.
 - All spaces in a field name will be replaced with the underscore character (_).
 - All double and single quotes will be removed.
 - All other invalid characters for field names will also be removed (such as %, $, or #).