ParticleEffect incrementing the intensity

Sorry I have a question,

I want to make a particleEffect (It´s like smoke) but incrementing the intensity.
First just a bit, increment the smoke and then a lot. What method I have to use in particleEffect?? How can I do it??

Thanks in advance!! :smiley:

i did something like this:


where p is the instance of ParticleEffect and “particles-1” is the name defined in the ptf file