Please post the code of this expert! I'm not about to guess what you are looking for!

Actually, The expert advisor has the ability to show at least 3 different systems on the same chart!

In the ribbon, you can show long, short, and neutral positions from system1.
In the Highlights , you can also show long, short ,and neutral positions from system2.
in the symbol ,you can show individual symbols and events occuring on the bar of the actual event from system3.
If you really want to you could set a 4th system just using the alerts, but they would not show up as signals on the chart.

It's all in the way you write your systems!In both the highlights and symbol tabs, you have to be aware of the precedence of your signal, the higher the priority the first to fire!

If you use a system that is +1 for long,-1 for short and 0 for neutral,The signal bar of the actual event would be sig=1 and Ref(Sig,-1)<>1 any earlier ref function would show up as 0 because the event has not yet happened.

A system signal should be a binary output IE:=+1,-1,0.

There are several ways to do this

Long:=C>Mov(C,50,S);
Short:=C<Mov(C,50,S);
Signal:=Long-short;
Signal
________
_____ / \_______
\____/
This creates a true ,false binary system
if the long condition is true it gives a +1 and the short condition gives a 0 so with that said the signal line will be 1-0=1 as long as the conditions remain the same.

if the short condition becomes true it will give +1 and the long condition gives a 0 so with that the signal line will be 0-1=-1

so a long buy signal for the first bar event would be Signal=1 and Ref(Signal,-1)<>1
a short sell signal for the first bar event would be Signal=-1 and Ref(Signal,-1)<>-1
A long exit signal would be Signal<>1 and Ref(Signal,-1)=1
A short exit signal would be Signal<>-1 and Ref(Signal,-1)=-1

If you were to use the forum dll in your systems it would be the same