Need JS script to get localstorage values from 2nd domain listed

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1

i need to inject JS script to get local storage from a domain listed in local storage section that is not the same domain as the webpage. I think the localstorage in question is a domain related to an iframe that is embedded within the webpage. localStorage gets the local storage values from the webpage url storage fine but not from the other domain listed.

How do i go about getting it?

Steven.