You have a syntax error. You want to change this.rawValue = "No" to be this.rawValue == "No". In your script this.rawValue = "No" you are actually setting the value of the field to be No so it will always be true.
You have a syntax error. You want to change this.rawValue = "No" to be this.rawValue == "No". In your script this.rawValue = "No" you are actually setting the value of the field to be No so it will always be true.