Execute a scene on Timer OR Event

I have a scene in which I turn on many lights.
That scene was triggered by a timer 30 minutes before sunset.

Depending on the weather condition, the light intensity could required the lights to be turn on earlier.
Therefore I added to the scene an event based on the HSM100 light sensor.

I want a OR, but it seems to be a AND condition, isn’t it ?
If it is a “AND” condition, how do I make it a “OR” condition ?

From what I have seen, when you have multiple events in a scene, they are OR. In other words, if any event occurs, the scene is executed.

Thanks @wscannell

…and if there is events and a timer ?

After reading again this:
http://wiki.micasaverde.com/index.php/Luup_Scenes_Events

it seems to be a “OR”.

Thanks