ma5:ma(c,5);
ma10:ma(c,10);
variable:n=0;
if cross(ma5,ma10) and holding=0 and n=0 then begin
buy(holding=0,1,market);
n:=1;
end
if cross(ma10,ma5) then begin
sell(holding>0,1,market);
buyshort(holding=0,1,market);
end
if cross(ma5,ma10) and holding>0 and n=1 then begin
sellshort(holding<0,1,market);
end