IPO in game engine does not work...

I have set up a simple relative vertex key IPO for a cube, and put in the logic bricks so that when up arrow is pressed, then AND controller, then IPO play, it will change shape…but it does not work at all…the cube just stays there lifeless…any ideas? i would also like to know how to make the ipo move according to if i hold the up arrow down.

vertex keys does not work in the game engine. You probably could achieve the same effect, by using python to move the vertices or using an armature deformed mesh.

Jason Lin