Clearing a dataset?

Ignition
9

I want to display a message when no data on table component, something like below but it’s not working, plz let me know how to mention for table if nodata

if (LotId!="" or MatlAutoId!=None) and vtable==dataset[0x6]:
		self.props.emptyMessage.noData.text="No Data Found"
		self.props.emptyMessage.noData.icon.path=material/sentiment_very_dissatisfied
	else:
		pass