Automating links from/to Microsoft Planner Plans to MS Projects tasks

[JordanW12]

Hey all,

I've been developing a bit of a project tracker recently, and I want to link my planner plans to a project task. You can do this manually in the Project Desktop application. I've tried looking for the API documentation or anything that could provide that kind of feature, no luck so far. 
I've managed to create a plan from a task but still struggling to link them. 

Thanks!