咨詢內容：variable:num=0;//每次初始化num if NUMPROFIT(1) >0 and exitbars=0 and num<20 and num>4 then num:=num+1;//加倉 if NUMPROFIT(1) <0 and exitbars=0 and num<21 and num>5 then num:=num-1;//減倉 改成如下，可以實現最多加倉至半倉嗎？為什么語法錯誤variable:num=0;//每次初始化num if NUMPROFIT(1) >0 and exitbars=0 and num<50% and num>4 then num:=num+1;//加倉 if NUMPROFIT(1) <0 and exitbars=0 and num<50% and num>5 then num:=num-1;//減倉
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