Bug 148724 the Multiplier of the Standard check box does not show properly < 0 values
In Series/Category Edit Format Dialog, the Multiplier of the Standard check box shows 0 when the value is less than 0 for example 0.000001.
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartReportItemBuilderImpl.java
eb.setDialogTitle( eb.getDialogTitle( ) + " - " + sTitle ); 
		}
		if ( eb.open( ) == Window.OK )
		{
			sExpression = eb.getResult( );
		}
		return sExpression;
	}
	public String invoke( String sExpression, Object oContext, String sTitle,
			boolean isChartProvider )
	{
		final ExpressionBuilder eb = new ExpressionBuilder( sExpression );
		eb.setExpressionProvier( new ChartExpressionProvider( ) );
		if ( sTitle != null )
		{
			eb.setDialogTitle( eb.getDialogTitle( ) + " - " + sTitle ); 
		}
		if ( eb.open( ) == Window.OK )
		{
			sExpression = eb.getResult( );
		}
		return sExpression;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IUIServiceProvider#validate(org.eclipse.birt.chart.model.Chart,
	 *      java.lang.Object)
	 */
	public final String[] validate( Chart cm, Object oContext )