Yes! thank you. That did the trick.
I was under the impression that as it was a new topic it would be set to 0, and the forum id would be set in the meta args.
		
	 
	
	
	
 
		
			
	
	
		
		Sorry, this is a simplification, it is indeed defined above this block, but even if I give it a content value of ‘Test’ I still get “Oh, bother! No topics were found here.”