How can i make the explosion sprite size increase?

[GTFoxN6Y]

I was making the wario apparition for my birthday. I think that if an overpowered character defeats the wario apparition, it will explode. But i need somthing to  increase the explosion size bigger and bigger until it cover the screen . So How can i make the explosion sprite size increase?

[InfernoRougue3]

You can set the x and y scale of projectiles and helpers. Which will make it bigger and smaller. 
 

Not sure whats the best way to make it gradually increase though. 

[GTFoxN6Y]

7 minutes ago, InfernoRougue3 said:

You can set the x and y scale of projectiles and helpers. Which will make it bigger and smaller. 
 

Not sure whats the best way to make it gradually increase though. 

OK thanks!

 

P.S. Welcome to the world of MFFA!