An identifier includes 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), an underscore (_), or a dollar sign ($).
Subsequent characters can be ASCII letters, numbers, underscores, or dollar signs.
The identifier name cannot be a reserved word.
To correct this error
Avoid using characters that are not part of the JScript language definition.