标题：连续出现n根阳线或阴线平仓的语句怎么写？

连续出现n根阳线或阴线平仓的语句怎么写？，谢谢大佬指教

补充一下，就是多头持仓时连续3根阴线平多仓，空头持仓时连续三根阳线平空仓，谢谢大佬

if holding>0 and enterbars>3 and all(isdown,3) then sell(1,0,market);

if holding<0 and enterbars>3 and all(isup,3) then sellshort(1,0,market);