Changing size of particles2D with slider or buttons in game

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:bust_in_silhouette: Asked By Sharon

I made fire with paritcles2D.
Now i want to be able to make that fire bigger and smaller by pressing buttons or with sliders. Does anyone know how to attach the slider/button to the particles2D with the behaviour for changing the size of the fire when the game is running??

(as example: with the sims in character costumization that you can change the size of the nose, ears, etc. with sliders)

Thank you!