I've been playing with your code a little bit and I think what you need to do is run a test for exactly which values you're trying to set.

A cookie can't be set if the domain is incorrect, for instance, so if you've got something accidentally weird appearing in your "$meta_configs{xina_domain}" then it will just be ignored by the browser. I mean it should be ignored by all browsers, but see above how you can't trust the browser anyway.

Take your "domain" value out and the cookie will still be valid anyway, but, in general, check the values in those items is my next thought.
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“Every bit of code is either naturally related to the problem at hand, or else it's an accidental side effect of the fact that you happened to solve the problem using a digital computer.” M-J D