unconstrained array clarification

[WishList@2600.com (Technobabble)]

Ok, thanks !  Now what if all I have is an unconstrained array type like this:

type xyz_array is array (integer <>) of integer;   -- this is it
type xyz_array_pointer is access xyz_array;
type xyz_array_pointer_array is array (1..100) of xyz_array_pointer;


type Object is
    record
       XYZ : xyz_array_pointer_array;    
       abc : integer;
    end record;


Now I declare an Object,

This : Object;   --  record is not constrained, legal or not?

Now I want to have say a 5 element xyz_array:

xyz5_array : xyz_array (1..5);

and I assign my pointer

This.XYZ(1) := xyz5_array'ACCESS;  -- address of xyz_array type is assigned

now I want to loop:

for I in This.XYZ(1)'RANGE
     loop 
      ..........


???? Will this work ???  Is the syntax totally incorrect ???

help !!!

Richmond