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
mergeOption( renderOptions,
						PDFRenderOption.SUPPORTED_IMAGE_FORMATS, pdfContext
								.getSupportedImageFormats( ) );
				mergeOption( renderOptions, PDFRenderOption.IS_EMBEDDED_FONT,
						new Boolean( pdfContext.isEmbededFont( ) ) );
			}
		}
		else
		{
			Object renderContext = appContext
					.get( EngineConstants.APPCONTEXT_HTML_RENDER_CONTEXT );
			if ( renderContext instanceof HTMLRenderContext )
			{
				HTMLRenderContext htmlContext = (HTMLRenderContext) renderContext;
				mergeOption( renderOptions, HTMLRenderOption.BASE_IMAGE_URL,
						htmlContext.getBaseImageURL( ) );
				mergeOption( renderOptions, HTMLRenderOption.BASE_URL,
						htmlContext.getBaseURL( ) );
				mergeOption( renderOptions, HTMLRenderOption.IMAGE_DIRECTROY,
						htmlContext.getImageDirectory( ) );
				mergeOption( renderOptions,
						HTMLRenderOption.SUPPORTED_IMAGE_FORMATS, htmlContext
								.getSupportedImageFormats( ) );
			}
		}
		
		
		HashMap options = new HashMap( );
		
		HashMap configs = engine.getConfig( ).getEmitterConfigs( );