# ParticleSystem:setSizeVariation

Sets the amount of size variation (0 meaning no variation and 1 meaning full variation between start and end).

## Function

### Synopsis

    ParticleSystem:setSizeVariation( variation )

### Arguments

`number variation`
  The amount of variation (0 meaning no variation and 1 meaning full variation between start and end).

### Returns

Nothing.

## See Also

- ParticleSystem

##

Category:

- Functions