Question: Riemann Sum -- Shading the Rectangles

I'm trying to get Maple to shade the approximating rectangles in a Riemann Sum but am having no luck -- any help would be appreciated.  Curretnly I've typed the following:

 

RiemannSum( x^2+1,x=0..2, boxoptions = [filled = true] );

 

Doesn't seem to want to shade the area.  Changing other boxoptions (e.g. color, etc.) does have an effect -- it's just the shading that is not working.

 

Thanks in advance,

 

-Greg

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