How to animate lattice in 2.5x?

Hi folks,

I need animate lattice… but I don’t know how to do it in 2.55 (nor any 2.5x), in previous 2.49 there was lattice key but now I’m lost

let say in frame 1 I want lattice in shape A, then in frame 51 in shape B… how this can be done in 2.5x? How can I insert the keys for lattice?

Thanks in advance

Add shape keys and then keyframe the value by pressing I with the mouse over the value field or right mouse click and select insert keyframe. You can then adjust the animation curves in the graph editor.

man I was think it would be something with those shapekeys…
thanks a ton, works like treat