Render Mask Include Lights in list

[ChuckRT]

Hi, I need to render a big scene but I want to use Render mask in order to see just a building,
I wanted to try the mask with the Background and I cannot make it appear, at least not with Include/Exclude option, I have tried using the Sky in the environment and with a visible dome and notting, lights doesnt appear in the list
The only way is to masking with Selected option, is there a way to make lights appear in this list?

[hermit.crab]

Putting the light in a group should make it appear in the list and work as expected.

[ChuckRT]

Thanks I didnt thought that !!!