layout.numColumns = 4 / numberRows;
layout.numColumns = 2;
	public Composite createArea( Composite parent )	{		cmpTop = null;		{			if ( axisIndex > 0 )			{				cmpTop = new Group( parent, SWT.NONE );				( (Group) cmpTop ).setText( Messages.getString( "DataDefinitionSelector.Label.YAxis" ) + axisIndex ); //$NON-NLS-1$			}			else			{				cmpTop = new Composite( parent, SWT.NONE );			}			GridLayout layout = new GridLayout( );			layout.numColumns = 4 / numberRows;			layout.marginHeight = 0;			layout.marginWidth = 0;			cmpTop.setLayout( layout );			GridData gd = new GridData( GridData.FILL_HORIZONTAL );			cmpTop.setLayoutData( gd );		}		cmbSeriesSelect = new Combo( cmpTop, SWT.DROP_DOWN | SWT.READ_ONLY );		{			cmbSeriesSelect.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );			cmbSeriesSelect.addSelectionListener( this );			refreshCombo( );		}		btnSeriesAdd = new Button( cmpTop, SWT.NONE );		{			refreshButton( );			btnSeriesAdd.addSelectionListener( this );		}		createDataDefinition( );		return cmpTop;	}