Bug 405749 Typo in variable name: linkToSalarParameter
In the class org.eclipse.birt.report.designer.data.ui.dataset.DataSetParametersPage.ParameterInputDialog, the field linkToSalarParameter appears to have a typo in it's name. "Salar" isn't a word (AFIAK) -- presumably what was meant was "linkToScalarParameter". It's a very minor issue, but I thought it worth tossing into a bug report so it won't get forgotten.
UI/org.eclipse.birt.report.designer.ui.data/src/org/eclipse/birt/report/designer/data/ui/dataset/DataSetParametersPage.java
return getMiscStatus( IStatus.ERROR,
						Messages.getString( "dataset.editor.error.duplicateParameterName" ) ); 
			
			if ( isBlankProperty( dataSetParamName.getText( ) ) )
				return getBlankPropertyStatus( ParameterPageUtil.dialogLabels[0] );
			if ( isNull())
			{
				return getMiscStatus( IStatus.ERROR,
						Messages.getString( "dataset.editor.error.nonemptyDefaultvalue" ) ); 
			}
			return getOKStatus( );
		}
		private boolean isNull( )
		{
			if ( defaultValueText.isEnabled( )
					&& defaultValueString.trim( ).length( ) == 0 )
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		
		
		/**
		 * Checks whether the linked report parameter's data type matches the
		 * current data set parameter's data type.
		 *