Is it possible use wa trigger for GSE?

Like maxdps wa trigger for Show next spell on screen?

If I understand what you are asking - no.

There are two types of Mods. Those that can DO things - GSE and those that can SEE things - WA. As soon as GSE can see what WA is telling it it moves into the SEE area and can no longer DO. This is Blizzards antibot code