n1:=todaybar;

dm:=4-INTPART(LOG(C));
ss:=ROUNDS(IF(sum(vol,n1)=0,C,sum(C*vol,n1)/sum(vol,n1)),2+dm);

if cross(close,ss) then begin

   sellshort(1,0,thisclose);

   buy(holding=0,1,thisclose);

end

if cross(ss,close) then begin
   sell(1,0,thisclose);

   buyshort(holding=0,1thisclose);

end

謝謝老師，