做个出现箭头向上的选股公式

编写条件：

源码如下 DIF1:=EMA(DCLOSE,12)-EMA(DCLOSE,26); DEA1:=EMA(DIF1,9); {柱状线} AAA1:=(DIF1-DEA1)*2*60; AAA上:IF(AAA1>REF(AAA1,1),AAA1,DRAWNULL), STICK,COLORRED,LINETHICK1; AAA下:IF(AAA1编写方法：

 DIF1:=EMA(DCLOSE,12)-EMA(DCLOSE,26);

DEA1:=EMA(DIF1,9);

AAA1:=(DIF1-DEA1)*2*60;

买入线:=15;

房子:=AAA1-REF(AAA1,1);

crOSS(房子,买入线);