N1:=5;N2:=10;N3:=20;K:=5;N:=26;P:=2;IF (k<=0)RETURN 0;MA$1:MA(CLOSE, N1);IF (k<=1)RETURN 0;MA$2:MA(CLOSE, N2);IF (k<=2)RETURN 0;MA$3:MA(CLOSE, N3);MID : MA(CLOSE,N);UPPER: MID + P*STD(CLOSE,N);LOWER: MID - P*STD(CLOSE,N);