Can I change the uv channel of a static mesh for the lightmap?

Can I change the uv channel of a static mesh for the lightmap?
My lightmaps horrible, and I don’t find where to config my static mesh lightmap.

You can change the channel in the static mesh editor by setting the channel number for Light Map Coordinate Index(it is 0 by default)

However it wont matter if you havent made a proper UV layout in your modeling software first.

Thanks a lot man, it was a UV problem indeed.

Click that arrow to see advanced settings.

Would it be possible to get a picture or a link to where the Light Map Coordinate Index channel field is located in the static mesh editor?

I looked here and could not find any reference to the light map coordinate index channel:

I see that you can toggle the uv channels on and off and that you can look at the various channels but I don’t see how you can tell unreal to use a specific channel for lightmapping.

Thank you Jacky