主题：请问为何图表上没有开平仓信号？

//做多条件
if holding=0 and a5 and close>a1
then begin
buy(1,1,marketr);
end

//平多条件
if holding>0 and close<a2
then begin
sell(1,0,marketr);
end

//做空条件
if holding=0 and a5 and close<a2
then begin
buyshort(1,1,marketr);
end

//平空条件
if holding<0 and close>a1
then begin
sellshort(1,0,marketr);
end

//收盘平仓
if a6 and holding>0
then begin
sell(1,0,marketr);
end

if a6 and holding<0
then begin
sellshort(1,0,marketr);
end