Path length

I was have a path that is quite long, physicaly. And I have made an object follow that path. Now in the past if I wanted to slow down the object, could change the path lenght option and it would take that many frames to play th animation. It (mouse over)says that this option is only available if I havn’t already set an IPO speed, I don’t think I have, however changing the path legnth doesn’t work.

if you use a different type of curve like a bezier, changing the path length will work, but with a path curve you have to go into the ipo window and adjust the speed ipo.