Niagara: Particle.Age

I set the particle velocity to Particles.Age. But the particles did not move totally.
Why the parameter, Particles.Age, always be 0 ?

Particle age is a normalized value that goes from 0 to 1; So at the end of their life, your particles have the speed of 1, which is very little, so you might not even see it.
Set speed using Vector * Particle.Age like this:

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