Attach google doc

How do i sync/attach a google doc to zoho projects? Every time i do it, it wants to "upload" the doc and put it into zoho drive. That is absolutely not what I want. Let's face it: Zoho docs is terrible. Google is way ahead, and I want to use GOOGLE DOCS, not zoho!! ALl i want is a reference to my GOOGLE drive. Yet zoho insists on inserting itself into the equation. This makes it a very frustrating experience. All our stuff is in google drive. I want it to remain there. Why is zoho fighting us on this????