Particle Emitter Emission Increase

Im trying to make flames increase their emission value over time so that the flame appears to be growing slowly as the ball goes faster and faster ( Pong game )

function Awake()
{
     InvokeRepeating("IncreasedFlame", 2, 2);
}

function IncreasedFlame()
{
     particleEmitter.minEmission() ++;
     particleEmitter.maxEmission() ++;
}

It will show flames for a couple seconds then it goes away and doesnt come back

I think it will work if you get rid of () and pass a particleEmitter object to the function
or You need to capitalize P so that way you are talking about the class.

ParticleEmitter.minEmission()++;

particleEmitter.minEmission ++;