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API > API/Runtime > API/Runtime/MovieSceneTracks > API/Runtime/MovieSceneTracks/Tracks > API/Runtime/MovieSceneTracks/Tracks/UMovieSceneDoubleVectorTrack
References
| Module | MovieSceneTracks |
| Header | /Engine/Source/Runtime/MovieSceneTracks/Public/Tracks/MovieSceneVectorTrack.h |
| Include | #include "Tracks/MovieSceneVectorTrack.h" |
int32 GetNumChannelsUsed&40;&41; const
Get the number of channels used by the vector