for не хочет перебирать

for (n=0; n<14; n++)
{
for (int n3=20; n3<=280; n3=n3+20)
{
pos_size_edit0[n][1]=n3;//ïîëå ýäèò ðàñïîëîæåíèå îò âåðõíåãî êðàÿ
}
}
/* pos_size_edit0[1][1]=40;
pos_size_edit0[2][1]=60;
pos_size_edit0[3][1]=80;
pos_size_edit0[4][1]=100;
pos_size_edit0[5][1]=120;
pos_size_edit0[6][1]=140;
pos_size_edit0[7][1]=160;
pos_size_edit0[8][1]=180;
pos_size_edit0[9][1]=200;
pos_size_edit0[10][1]=220;
pos_size_edit0[11][1]=240;
pos_size_edit0[12][1]=260;
pos_size_edit0[13][1]=280;
*/

int n;
for (n=0; n<14; n++)
{
for (int n3=20; n3<=280; n3=n3+20)
{
messagebox (n3);
}
}

int pos_size_edit0[2][4], okno[2][4];
string text_edit0[2];

okno[0][0]=100;
okno[0][1]=20;
okno[0][2]=100;
okno[0][3]=18;

okno[1][0]=100;
okno[1][1]=40;
okno[1][2]=100;
okno[1][3]=18;

for (int n=0; n<2; n++)
{
for (int n1=0; n1<4; n1++)
{
pos_size_edit0[n][n1]=okno[n][n1];
}
}