Generalize template for getting array length
Generalize template for getting array length

sideeffects/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya