SYS0320 error on asset listing

Hello,

 

I think I have made a bit of a school boy error and not sure how I can fix the problem.

 

I have an asset listing and I need it to exclude a single asset, but this asset is dynamic in that it can vary.

 

So I tried to add - %asset_metadata_page.highlightedsection% to the 'Exclude assets' field.  However I get a message saying "Unknown asset (id #%asset_metadata_page.highlightedsection%)".

 

When I try to acquire the locks on the details screen on this asset I get the following error - 

  MySource Error

			[ASSERT EXCEPTION] [string] "%asset_metadata_page.highlightedsection%" is not a valid asset ID [SYS0320]
	<p>&#160;<p>Am i able to resolve this without having to delete the asset listing and creating it again? &#160;The reason I ask this is because the asset listing is used in many places across the website and it would be a pain having to find them all and change it over.<p>&#160;<p>:(<p>&#160;<p>Thanks<p>David

Are you trying to put the keyword into the Asset Picker? If so, this isn't going to work. 

Ouch, haven't seen that before. Can you tell us what version of Matrix you are using?