Bug 179743 Parameter Validate Event is not Called
I have tested the validate event on parameters and it never appears to get called.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
layoutEngine
						.setOption( IPDFRenderOption.FIT_TO_PAGE, fitToPage );
			}
			Object pagebreakOnly = renderOptions
					.getOption( IPDFRenderOption.PAGEBREAK_PAGINATION_ONLY );
			if ( pagebreakOnly != null )
			{
				layoutEngine.setOption(
						IPDFRenderOption.PAGEBREAK_PAGINATION_ONLY,
						pagebreakOnly );
			}
		}
		return layoutEngine;
	}
	protected void loadDesign( )
	{
		if ( runnable != null )
		{
			ReportDesignHandle reportDesign = executionContext.getDesign( );
			
			Iterator iter = reportDesign.includeScriptsIterator( );
			while ( iter.hasNext( ) )
			{
				IncludeScriptHandle includeScript = (IncludeScriptHandle) iter
						.next( );
				String fileName = includeScript.getFileName( );
				executionContext.loadScript( fileName );
			}
			
			ReportScriptExecutor.handleInitialize( reportDesign,