Bug 198839 Hide element on master page works only for PDF output
1. Insert any element (grid, label, image, text) in the header or footer of the master page. 2. Use the Visibility property to hide the element for all outputs. Expected result: Element does not appear in any of the output formats. Actual result: The element is hidden only in PDF.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
{
					String paramName = param.getName( );
					Object paramValue = runValues.get( paramName );
					buffer.append( paramName );
					buffer.append( ":" );
					buffer.append( paramValue );
					buffer.append( "\n" );
					return true;
				}
				boolean visitParameterGroup( ParameterGroupHandle group,
						Object value )
				{
					return visitParametersInGroup( group, value );
				}
			}.visit( (ReportDesignHandle) runnable.getDesignHandle( ), null );
			log.log( Level.FINE, "Running the report with paramters: {0}",
					buffer );
		}
	}
	/**
	 * validate whether the parameter value is a valid value for the parameter
	 * 
	 * @param p
	 *            the parameter to be verified
	 * @param paramValue
	 *            the value for the parameter
	 * @return true if the given parameter value is valid; false otherwise
	 */
	private boolean validateScalarParameter( ScalarParameterHandle paramHandle )
			throws ParameterValidationException