Bug 182677 Crosstab can not be converted to template item
The logic in model to check if crosstab can be converted to template report item returns false, but it should be true. The related check code is at DesignElementHandle.canTransformToTemplate().
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/TemplateCommand.java
if ( !( templateParam.getDefaultElement( ) instanceof ReportItem ) )
					throw new PropertyValueException(
							element,
							prop.getName( ),
							value,
							PropertyValueException.DESIGN_EXCEPTION_INVALID_VALUE );
			}
		}
		if ( ( element instanceof SimpleDataSet || element instanceof TemplateDataSet )
				&& IDesignElementModel.REF_TEMPLATE_PARAMETER_PROP.equals( prop
						.getName( ) ) )
		{
			assert value instanceof ElementRefValue;
			if ( ( (ElementRefValue) value ).getElement( ) == null )
			{
				TemplateParameterDefinition templateParam = resolveTemplateParameterDefinition(
						module, ( (ElementRefValue) value ).getName( ) );
				if ( !( templateParam.getDefaultElement( ) instanceof SimpleDataSet ) )
					throw new PropertyValueException(
							element,
							prop.getName( ),
							value,
							PropertyValueException.DESIGN_EXCEPTION_INVALID_VALUE );
			}
		}
	}
	/**
	 * Resolve the property value of <code>REF_TEMPLATE_PARAMETER_PROP</code>
	 * in a template element.
	 *