I have 2 classes (CLASS1 and CLASS2). A CLASS1 object (OBJECT1) will instantiate a CLASS2 object (OBJECT2) and store a reference to it in one of it's properties (OBJECT1.OBJECT2)

I want to be able to manipulate a property of the OBJECT2 from within OBJECT1 (OBJECT1.OBJECT2.ID = 3 or OBJECT1.OBJECT2.SETID(3)) but I don't want someone to be able to programatically do that.

In other words, within OBJECT1 I want to be able to do the following:

function update
...

OBJECT2.ID = 3 && or OBJECT2.SETID(3)
endfunc

but I don't want to be able to do this from the command line:

OBJECT1.OBJECT2.ID = 3
OBJECT1.OBJECT2.SETID(3)

Is this possible? I've tried making ID a protected property of CLASS2 but that makes it impossible for OBJECT1 to access it.

Grateful for whatever help you can offer!