Bug 189607 2D+ Curve Fitting Line does not work correctly [0001]
Description: 2D+ Curve Fitting Line does not work correctly. Build number: 2.2.0.v20070529-1039 Steps to reproduce: 1. Preview the attached design file. Expected result: Curve Fitting Line for 2D+ works corrctly. Actual result: See the screenshot. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/factory/Generator.java
{
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.GENERATION,
					"exception.illegal.null.value",  
					Messages.getResourceBundle( ) );
		}
		
		if ( rtc == null )
		{
			rtc = new RunTimeContext( );
		}
		
		if ( rtc.getULocale( ) == null )
		{
			rtc.setULocale( ULocale.getDefault( ) );
		}
		
		IChartScriptContext icsc = rtc.getScriptContext( );
		if ( icsc == null )
		{
			
			ChartScriptContext csc = new ChartScriptContext( );
			csc.setChartInstance( (Chart) EcoreUtil.copy( cmDesignTime ) );
			csc.setExternalContext( externalContext );
			csc.setULocale( rtc.getULocale( ) );
			csc.setLogger( logger );
			rtc.setScriptContext( csc );
			icsc = csc;
		}
		else if ( icsc instanceof ChartScriptContext )