multiple particle effects

Let’s say you want a sphere to explode and then smoke. You add particle effect for frames 1-10 for sparks and then add another particle effect for frames 20-30 for the smoke. Only the first particle effect you set up seems to work. Am I doing this wrong or is this a bug?

Nathan
http://home.comcast.net/~nalter

I’m not sure about anyone else, but I’d use more than one particle emitor.