主题：一个策略同时盯多个品种产生的问题

if holding>0 and (h-enterprice)>=(hhv(h,enterbars+1)-enterprice)*0.2 then sell(1,holding,market);

if holding<0 and (enterprice-l)>=(enterprice-llv(h,enterbars+1))*0.2 then sellshort(1,holding,market);