You composed an identifier using a character (or characters) not recognized as valid by the JScript compiler. Valid characters use the following rules:
- The first character must be an ASCII letter (either uppercase or lowercase) or an underscore (_).
- Subsequent characters can be ASCII letters, numbers, or underscores.
- The identifier name cannot be a reserved word.
To correct this error
Avoid using characters that are not part of the JScript language definition.
JScript Variables | Special Characters | JScript Data Types