Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
setMap( multiLineItem, valueExpr );
		
		currentElement = multiLineItem;
	}
	public void visitParameterGroup( ParameterGroupHandle handle )
	{
		ParameterGroupDefn paramGroup = new ParameterGroupDefn( );
		paramGroup.setHandle( handle );
		paramGroup.setParameterType( IParameterDefnBase.PARAMETER_GROUP );
		paramGroup.setName( handle.getName( ) );
		paramGroup.setDisplayName( handle.getDisplayName( ) );
		paramGroup.setDisplayNameKey( handle.getDisplayNameKey( ) );
		paramGroup.setHelpText( handle.getHelpText( ) );
		paramGroup.setHelpTextKey( handle.getHelpTextKey( ) );
		SlotHandle parameters = handle.getParameters( );
		
		List properties = handle.getUserProperties( );
		for ( int i = 0; i < properties.size( ); i++ )
		{
			UserPropertyDefn p = (UserPropertyDefn) properties.get( i );
			paramGroup.addUserProperty( p.getName( ), handle.getProperty( p
					.getName( ) ) );
		}
		int size = parameters.getCount( );
		for ( int n = 0; n < size; n++ )
		{
			apply( parameters.get( n ) );
			if ( currentElement != null )
			{
				paramGroup.addParameter( (IParameterDefnBase) currentElement );