E-Business Suite

I am using the following code to calculate base item coordinates
This works for CAD formats, but for Office documents the x,y min max come out 0,0
How can the base item coordinates be calculated for Office documents
public BaseItemDimensions(PAN_CtlFileInfo fileInfo)
{
PAN_CtlRange _baseCoords = fileInfo.getCoordinates();
PAN_CtlPoint min = _baseCoords .min;
PAN_CtlPoint max = _baseCoords .max;

        Ins ins = fileInfo.getInsertion();  
        fileInsertion = new FileInsertion(ins);  
         
        min.x = (min.x - ins.offset.x) / ins.scale.x;  
        max.x = (max.x - ins.offset.x) / ins.scale.x;  
        min.y = (min.y - ins.offset.y) / ins.scale.y;  
        max.y = (max.y - ins.offset.y) / ins.scale.y;  
 
        baseCoords.min = new Point(min.x, min.y, min.z);  
        baseCoords.max = new Point(max.x, max.y, max.z);  

        offset = new Point(ins.offset);  
        scale = new Point(ins.scale);  
         
    }