Hi @ShyamSundar ,
RewriteEngine On
# Set userRegion and userRegionDispatcher together if not set
RewriteCond %{HTTP:x-aem-client-country} ^(us|in)$ [NC]
RewriteCond %{HTTP_COOKIE} !userRegion= [NC]
RewriteRule ^ - [CO=userRegion=%1:31557600:/:Secure,CO=userRegionDispatcher=samplecookie:31557600:/]
...