if cross(aroon_up,70) and aroon>0 then begin
sellshort(1,0,market);
buy(holding=0,1,market);
signal:=1;
end
if cross(50,aroon_dn) and aroon>0 then begin
sellshort(1,0,market);
buy(holding=0,1,market);
signal:=1;
end
if cross(aroon_dn,70) and aroon<0 then begin
sell(1,0,market);
buyshort(holding=0,1,market);
signal:=-1;
end
if cross(50,aroon_up) and aroon<0 then begin
sell(1,0,market);
buyshort(holding=0,1,market);
signal:=-1;
end