Returns the size of the specified subarray in an array of subarrays.
            
            For a brief overview of working with 2D arrays, see 2D Arrays [ICE Fundamentals].
            
             Category: Array2d
            
             Output Ports: Result
            
            
               
                  
                     
                     
                  
                  
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                       A scene reference that is prepended to Array Indices Reference to fully resolve the name.  
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                       The attribute being used to store the indices used by the subarrays.  
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                       The index of the subarray whose size to return, where 0 is the first subarray.  
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