Where does $key get its value from? 

 $hash->{$v->{$key}}->{$_}  = $v->{$_} for @properties;
##............^^^^

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If you used strict & warnings, you'd probably have solved this yourself.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: How to GET CPU values from WMI by BrowserUk
in thread How to GET CPU values from WMI by gulden

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