Unable to resize the chart Column width with the corresponding label

I was trying to give a specific width of a chart columns and it is working but the labels are not correctly aligned to bars.


I used to change the width this ...

Code:

---

<ext:ColumnSeries Axis="Left" XField="AttenUnit" YField="AttenTotal">
                <Style Width="50" />     
 </ext:ColumnSeries>

---

Thank You for your help