Hi Jose,
You can only make modifications to a customer resource if it is directly linked to Profile.
You have a schema OrderStatuses which I believe has a 1:1 mapping with Order which then as a many to one mapping with Profile, simply because a profile can make multiple orders.
Inside ProfileandServicesext you can access Orders using the href URL for it.
Then through that you select the href for a particular order which will take you into a specific order detail. This will give you href for OrderStatus.
This is how you will be able to make the modification to status
Regards,
Vipul Raghav