Lighting help

Hello All,

I have an amimation that i am doing and am trying to make the lights go light and dark. I made the Ipo curve and have the keys set to go from 0 to 6. When i run the animation the lights stay at zero. I have done this befor and had it work but dont know what i am doing different now. I see the animation running over the ipo curve for energy but the energy for the spot is not changing. if i set the camera to move it does but the energy ipo for the lamp stays the same. Please help

I tried a trivial animation using lamp energy and it worked fine. See:

Maybe you can publish your .blend file to share the issue?

it works here. Over what frames is the energy supposed to go from 0 to 6?

got it to work thank you