using typedef intput argument for function

Hi

-------------- Sub function ---------------------
package function_list is
    --* typedef 
    type    int_array    is    array    (integer range <>) of integer;
    
    --* functions
    function sum(signal data: int_array(0 to 9)) return integer;
end function_list;
package body function_list is
    function sum(signal data: int_array(0 to 9)) return integer is
        variable sum_val:    integer range 0 to 255    :=0;
    begin
        for i in 0 to 9 loop
            sum_val:= sum_val + data(i);
        end loop;
        return sum_val;
    end sum;
end function_list;
--------------- Main file --------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.numeric_std.all;
use work.function_list.all;
architecture rtl of main is
    type    int_array    is    array    (integer range <>) of integer;
    signal    data:    int_array(0 to 9);
begin
    sum_process: process(sum_flag,clk)
        variable sum_val: integer range 0 to 255;
    begin
        if rising_edge(clk) then
            if sum_flag = '1' then 
                sum_val:= sum(data); 
            end if;
        end if;
    end process;    
end rtl;