Your XML is not well formed, and does not comply with the Rules
schema. Check it and try again. It returned the message: Line : -1 -
cvc-complex-type.2.3: Element 'RuleDef' cannot have character [children],
because the type's content type is element-only.
I get the above error message when I try to import the rule in the attachment. I can't figure out what is wrong in the cryptic message!