VAR1:=LLV(LOW,6);{cow/bear+m20} 
VAR2:=HHV(HIGH,6); 
COW:=EMA((CLOSE-VAR1)/(VAR2-VAR1)*100,5); 
BEAR:=EMA(0.667*REF(COW,1)+0.333*COW,2); 
KK:=IF(COW>BEAR,1,1.025); 
KEY:=CLOSE*BEAR/COW*KK; 
M20:=IF((CLOSE>MA(CLOSE,20)),1,0); 
BUYIN:TRADETO(0,KEY*M20); 
SELLOUT:TRADETO(1,KEY); 
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