Oracle Forms

Hi,

I am having procedure written in form6i, this procedure is having pl/sql table datatyep "v_suppmesg orcl.err_message.error_tabtype;" this pl/sql datatype is defined in database and the procedure in database is not having any error in it.
But when i am compling my form its giving me error

PL/SQL TABLE declarations must currently use binary_integer indexes

and error point is *"i_rowindex"* in the sentance given below.

*"SET_GROUP_CHAR_CELL (g_suppress_error_colid, v_rowindex, v_suppmesg(i_rowindex));"*
PROCEDURE PRC_A IS
v_rowindex NUMBER (5,0) := 1;
v_suppmesg orcl.err_message.error_tabtype;
BEGIN

g_suppress_error_rgid := FIND_GROUP (g_suppress_error_rgname);

IF ID_NULL (g_suppress_error_rgid)
THEN
g_suppress_error_rgid := CREATE_GROUP (g_suppress_error_rgname, GLOBAL_SCOPE);
g_suppress_error_colid := ADD_GROUP_COLUMN ( g_suppress_error_rgid
, g_suppress_error_colname
, CHAR_COLUMN
, 15);

orcl.err_message.get_messages (v_suppmesg);

FOR i_rowindex IN 1..v_suppmesg.count
LOOP

ADD_GROUP_ROW (g_suppress_error_rgid, END_OF_GROUP);
SET_GROUP_CHAR_CELL (g_suppress_error_colid, v_rowindex, v_suppmesg(i_rowindex));

v_rowindex := v_rowindex + 1;

END LOOP;
ELSE
g_suppress_error_colid := FIND_COLUMN (g_suppress_error_rgname||'.'||g_suppress_error_colname);
END IF;

END Init_Suppress_Message;


can anyone tell me what's wrong in this.