passing an array to a generic function

[ratsonjaniv@hotmail.com (Mr. J.)]

hi,

this is my generic function:

generic
   type Index is (<>);
   type Item is private;
   type Arr is array(Index range <>) of Item;
   with function "="(I1,I2 : Item) return Boolean is <>;
   
   function Filter_Array(A: Arr) return Arr;

Now, I wanna write a create a Filter_String function according to it:

   type Index is new Integer;
   type Item is new Character;
   type Arr is Array(1..23) of character;
   
   function Filter_String is new Filter_Array(Index,Item,Arr,"=");

As U all experts guessed it won't compile, my question is how to pass
the array of character to my new function ?

10x,
J.