Making a geoset fade

[Sunchips]

I have tried animating the alpha of a geoset to make it fade. The problem I have is that I can only set it to 1 or 0 for it to work. If I want something to fade from 1-0 over say 5 seconds it does not work. I use magos to try doing this. Does anyone know how it's done?

 

[GhostWolf]

Set the interpolation to Linear.

 

[Sunchips]

Set the interpolation to Linear.

Thanks, I will try that