Bác nào rảnh giúp hộ em cái này ạ

Sao em bachtest hàm for này lên 2000 mà comment vẫn trả về m n là 0 0 vậy
double m =0; double n =0;double bandlow10 =0; double bandhigh10 =0;
double bandhigh11 =0;double bandlow11 =0;double bandhigh12 =0; double bandlow12 =0;
for ( int i =1; i < 20;i++)
{
bandlow10 =iBands(NULL,0,50,2,0,PRICE_LOW,MODE_CLOSE,i);
bandhigh10 = iBands(NULL,0,50,2,0,PRICE_HIGH,MODE_CLOSE,i);
bandlow11 =iBands(NULL,0,50,2,0,PRICE_LOW,MODE_CLOSE,(i+1));
bandhigh11 = iBands(NULL,0,50,2,0,PRICE_HIGH,MODE_CLOSE,(i+1));
bandlow12 =iBands(NULL,0,50,2,0,PRICE_LOW,MODE_CLOSE,(i+2));
bandhigh12 = iBands(NULL,0,50,2,0,PRICE_HIGH,MODE_CLOSE,(i+2));
if (bandlow10 > Close && bandlow11 < Close[(i+1)] && bandlow12 < Close[(i+2)]) {m =m + 1;}
if (bandhigh10 < Close && bandhigh11 > Close[(i+1)] && bandhigh12 > Close[(i+2)]) {n =n +1;}
}
Comment(string(m)+string(n));