主题：怎么在一根K线上只做一次动作

MACD:="MACD"(12，26，9) ;
COND1：=CROSS(MACD,0);
COND2：=CROSS(0，MACD);
variable:a=1;
VARIABLE:WIN=0,WIN2=0,MAXWIN=0;
//开多
IF COND1 AND HOLDING=0 THEN
BEGIN
开多:BUY(1,1，MARKET);
END
//平仓
平多:SELL(COND2，0);
//多单
IF HOLDING>0 AND ENTERBARS>1 THEN
BEGIN
VARIABLE:CC=0;
WIN:=CLOSE-ENTERPRICE;//记录最大盈利
IF WIN>MAXWIN THEN
MAXWIN:=WIN;
IF WIN>=15*MINDIFF THEN
WIN2:=(MAXWIN-WIN)/MAXWIN*100;//最大盈利后的回调幅度
END
IF WIN2>=40 AND EXITBARS>1 THEN
BEGIN
止盈:SELL(HOLDING>0,0);
MAXWIN:=0;
CC:=CLOSE;
END
IF HOLDING=0 AND CLOSE=CC and a=1 THEN
BEGIN
开多2:BUY(1，1，MARKET);
a:=2;
END

IF HOLDING=0 AND CLOSE=CC and a=2 THEN
BEGIN
开多2_:BUY(exitbars>0，1，MARKET);