主题：日内只开1次仓如何表达

variable:nums=0;
short:=cross(ma(c,10),ma(c,5));
long:=cross(ma(c,5),ma(c,10));
tt:= time>092000 and time<151000;
n:=barslast(date<>ref(date,1))+1;

if n then begin
if long and tt and nums=0 then
    begin
       buy(holding=0,1,market);
       nums:=1;
 end
if short and tt and nums=1 then
   begin
    sell(holding>0,0,market);
     end
    
 if time>=151000 then nums:=0;//收盘前赋值变回去   
end