Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

> Unreal Engine API Reference > Runtime > Engine > Matinee > UInterpTrackToggle > bActivateSystemEachUpdate

Light Theme

Dark Theme

bActivateSystemEachUpdate

If true, the track will call ActivateSystem on the emitter each update (the old 'incorrect' behavior).

Windows

MacOS

Linux

Syntax

uint32 bActivateSystemEachUpdate: 1

Remarks

If true, the track will call ActivateSystem on the emitter each update (the old 'incorrect' behavior). If false (the default), the System will only be activated if it was previously inactive.

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss