Sub emitter particle effect only plays once.

I have a projectile with a sub emitter, when it collides with object it should play an effect 3 times. I have tried doing this by:

In Emission:

Setting the Cycles to 3, with and Interval of .25 - The effect only plays once.
Adding three bursts with Cycles set to 1, and the with Time set to 0.00, 0.25, 0.5 - Again the effect only plays once.

How do I get this to work properly?

You can’t - one-off events such as death and collision can only trigger a single burst with a time of zero. (i.e. at the exact time of the event)

Sorry!

You can actually, but you have to do some coding. Please see my answer to this same problem posted here:

ANSWER for Instantiating a new sub-emitter upon collision.