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API > API/Plugins > API/Plugins/Niagara > API/Plugins/Niagara/UNiagaraSimCache
Description
Get number of active instances for the emitter at the given frame. An EmitterIndex or INDEX_NONE will return information about the system instance.
| Name | GetEmitterNumInstances |
| Type | function |
| Header File | /Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraSimCache.h |
| Include Path | #include "NiagaraSimCache.h" |
| Source | /Engine/Plugins/FX/Niagara/Source/Niagara/Private/NiagaraSimCache.cpp |
int GetEmitterNumInstances
(
int32 EmitterIndex,
int32 FrameIndex
) const