I couldn't view your chart snapshot, but it sounds like you are talking about the grid lines. Put something similar to the following into your LineChart declaration.
<mx:backgroundElements> <mx:GridLines direction="horizontal"> <mx:horizontalFill> <mx:SolidColor color="0xFF0000" /> </mx:horizontalFill> </mx:GridLines> </mx:backgroundElements> Look at the GridLines class in the docs for more info. The above is taken from the example there. HTH, Doug --- In flexcoders@yahoogroups.com, "luoxuanhuayelin" <[EMAIL PROTECTED]> wrote: > > > In a linechart, if the backgroundColor of Application is not > "#ffffff",there will be some white horizontal lines in the linechart. > how to change the line's color?? thanks > > link to a snapshot of my linechart > <http://bbs.blueidea.com/attachment.php?aid=80668&noupdate=yes> >