帮忙“变色龙”通达信公式

编写要求：

请老师帮忙将此通达信公式改为大智慧公式 谢谢 参1:MA(CLOSE,7),COLORYELLOW,LINETHICK2;参2:MA(CLOSE,20),COLORBLUE,LINETHICK2;A:MA(C,4),COLORRED,LINETHICK2;B:=A>REF(A,1);IF(B-1,A,DRAWNULL)COLORGREEN,LINETHICK2;SG:IF(C<"SAR.SAR","SAR.SAR",DRAWNULL),COLORGREEN,CIRCLEDOT;XG:IF(C>"SAR.SAR","SAR.SAR",DRAWNULL),COLORRED,CIRCLEDOT;

解答：

参1:MA(CLOSE,7),COLORYELLOW,LINETHICK2;