add ssl to roku master video player

Hi im working with the roku master video player, i add the ssl to my host but when i use the link

https://myhost.com/xml/categories.xml

but i get error when i use https instead of http , how can i add the ssl to the channel, on roku develop documentation i need to add the next code


    request.SetCertificatesFile ("common:/root/www_mysite_com.csr")

but i don’t know where i need to add i hope you can help me thanks