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API > API/Plugins > API/Plugins/NiagaraEditor > API/Plugins/NiagaraEditor/ViewModels > API/Plugins/NiagaraEditor/ViewModels/FNiagaraSystemToolkitParameterPa-
References
| Module | NiagaraEditor |
| Header | /Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraParameterPanelViewModel.h |
| Include | #include "ViewModels/NiagaraParameterPanelViewModel.h" |
| Source | /Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Private/ViewModels/NiagaraParameterPanelViewModel.cpp |
void OnParameterRemovedExternally
&40;
const FNiagaraVariableBase & InOldVar,
UNiagaraEmitter &42; InOptionalEmitter
&41;