Linking Multiple Page Fields in Pivot Table

Hi,

I am trying to ensure that Page Fields in my Pivot Table is linked. Let's say my data as follows:

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When I put Region and Country as my Page Field in the Pivot Table, and select the Region, Asia, I only want to see Japan, Korea, Singapore in my Country Page Field. What it is showing now is all the countries including Germany and Italy even though the region Asia was selected.

How can this be done and if it requires VBA programming, kindly advice. I am really not familiar with the Excel VBA syntax.