Problem Adding Addon Domain

[naamane]

Hello everybody , i have a little problem please .
i want to change my domain name from ( for example : mywebsite.com ) to mynewwebsite.com ?

when i use addon domains they told me that : "Could not determine the nameserver IP addresses for “naamanescar.com”. Please make sure that the domain is registered with a valid domain registrar."

what's the solution please ? it's been one week ..and i'm a beginner

 

[cPanelMichael]

You will need to ensure you registrar the domain name at a domain registrar, and assign it the name servers provided to you by your web hosting provider before adding it as an addon domain name to your account.

Thank you.