Record Page: Only show Records linked to "Current Record"

[4N]

Hi everyone

I am working on an Interface that has "Projects" and "Tasks". 

Now in the "Project" Record Page I have a Grid view of "Tasks". How can I set it to only show Tasks that are linked to the current Project? 

Like this basically 

Thanks a lot!

[TheTimeSavingCo]

Hm, could you provide a screenshot of how the user is selecting which project to look at?