Modify ListGrid RowNumber width

[liuyajin]

Is it possible change the RowNumber width column in ListGrid? For large values, the content can't be displayed correctly.

Is SmartClient but not Smart GWT.

SmartClient Version ：v9.0p_2013-08-06 (2013-08-06)
OS/browsers: Windows 7/ Firefox 27.0.1

Thanks

[liuyajin]

Who can help me ?