MA7:EMA(CLOSE,7),COLORFFFFFF;
MID:MA(CLOSE,20),COLORYELLOW;
UPPER:MID+2*STD(CLOSE,20),COLORRED,DOTLINE;
LOWER:MID-2*STD(CLOSE,20),COLORGREEN,DOTLINE;
MA7_1:=EMA(CLOSE,7);
MID_1:=MA(CLOSE,20);
UPPER_1:=MID_1+2*STD(CLOSE,20);
LOWER_1:=MID_1-2*STD(CLOSE,20);
XG:UPPER_1<REF(UPPER_1,1) AND LOWER_1>REF(LOWER_1,1) AND CROSS(MA7_1,MID_1);