Thanks again for your answer Cameron.
Gizmo is installed, I can see it in the Plugins folder. I know that X-Plane 10 is not a very new software, but it runs very fine in my old iMac and really with the IXEG 737 and some addons more I dont need X-Plane 11 or 12, maybe running an older installer of the 737?
I know that that X-Plane 10 is out of support and really I am not looking for support but only fly the 737 like the first time I installed it.
One more time thanks for your kindness.