# SpeedLimitByLife module
# Overview
SpeedLimitByLife (speed limit change module), used to set the speed limit in the particle life cycle.
# Property description
| Property | Function | Type |
|---|---|---|
| separateAxes | Whether to limit the speed separately on the XYZ axis. | boolean |
| x | If separateAxes is true, it indicates the lower limit of the X-axis speed (target value). If separateAxes is false, it means the lower limit of the speed of the three axes of XYZ, which is displayed as SpeedLimit in the tool. | engine.Particle.AdvancedProperty.ConstantProperty engine.Particle.AdvancedProperty.TwoConstantsProperty |
| y | If separateAxes is true, it indicates the lower limit of the Y-axis speed (target value). | engine.Particle.AdvancedProperty.ConstantProperty engine.Particle.AdvancedProperty.TwoConstantsProperty |
| z | If separateAxes is true, it indicates the lower limit of the Z-axis speed (target value). | engine.Particle.AdvancedProperty.ConstantProperty engine.Particle.AdvancedProperty.TwoConstantsProperty |
| dampen | The damping value, which can be a value between 0 and 1. The larger the value, the faster the speed will drop. | number |