ColumnChart: how to get rid of shadow behind columns?

Question

I have few questions about ColumnChart please (screenshot and code below):

1. How to get rid of the shadow drawn behind each column? I've tried adding <mx:filters /> but it hasn't helped
2. How to get rid of the padding between columns, so that they touch each other sidewise (like stairs) SOLVED

3. How to get rid of the warning Data binding will not be able to detect assignments to "horizontalAxis"? I've tried moving that code block around to get rid of the axis parameter, but can't find the right spot. SOLVED

       <mx:ColumnChart id="_chart"
               type="overlaid"
               dataProvider="{_ac}" >
   
   <mx:filters /> <!-- doesn't remove shadows -->
   
   <mx:horizontalAxis>
       <mx:CategoryAxis categoryField="yw"/>
   </mx:horizontalAxis>    
   
   <mx:horizontalAxisRenderers> <!-- warning -->
       <mx:AxisRenderer axis="{_chart.horizontalAxis}" canDropLabels="true" />
   </mx:horizontalAxisRenderers>       
   
   <mx:series>
       <mx:ColumnSeries 
           xField="yw" 
           yField="max" 
           displayName="Лидер недели"
           />
       <mx:ColumnSeries 
           xField="yw" 
           yField="pos" 
           displayName="Выигрыш"
           />
       <mx:ColumnSeries 
           xField="yw" 
           yField="neg" 
           displayName="Проигрыш"
           />      
   </mx:series>
       </mx:ColumnChart>
   
       <mx:Legend dataProvider="{_chart}" 
          direction="horizontal" 
          width="100%" />
   

UPDATE:

Sunil has helped with question #3, thanks!

And the problem #2 is solved by columnWidthRatio="1"

So now I just need to know, how to get rid of the shadows - as per question title :-)

Answer 1

For your first question, simple add seriesFilters="{[]}" to mx:ColumnChart attributes.