Interface not appearing

I went through the Airplane tutorial and interfaces worked fine for me there, but when I try to put an interface in a project I'm doing it doesn't appear. By "doesn't appear" I mean that when I put a debug message right after I call the GetInterface method I get absolutely nothing returned from my interface reference.

Here's the code in EnemyComponent:

protected override bool _OnRegister(TorqueObject owner)
        {
            if (!base._OnRegister(owner) || !(owner is T2DSceneObject))
                return false;


            paused = Owner.Components.GetInterface<ValueInterface<bool>>("bool", "pause");
            
            Debug.WriteLine("paused =" + paused);

            ProcessList.Instance.AddTickCallback(Owner, this);

            return true;
        }

        ValueInterface<bool> paused;

The debug message I get back is "paused =". Here's the code in PlayerComponent where I declare the interface "InPlace":

protected override void _RegisterInterfaces(TorqueObject owner)
        {
            base._RegisterInterfaces(owner);

            Owner.RegisterCachedInterface("bool", "pause", this, paused);
        }

        ValueInPlaceInterface<bool> paused = new ValueInPlaceInterface<bool>(false);

It's seems weird to me that I don't get anything returned for my ValueInterface variable in the debug message. When I place a debug message at the exact same spot in the airplane tutorial I get "GarageGames.Torque.Core.ValueInPlaceInterface'1[System.Single]" back.

I have the PlayerComponent component on the player and EnemyComponent on the enemy. Anyone else get something like this before or know what may be happening? Thanks.

Edit: It looks like when I put both components on one object then I do get the correct debug message. So do both components accessing an interface value have to be on the same T2dSceneObject?