Put a Tester between the reader and the featurereader to test @Value(fme_feature_type_name) LIKE '%M_CSCL%' and remove the where clause from the featurereader.

Thanks, however, frustratingly despite doing the above, all the feature_type_names pass the Tester.

Is there something askew with the Schema (Any Format) Reader ?

Without data and workspace it is hard to say, but I guess your did not got the syntax right.

This should work fine.

I can't comment on the Schema (Any Format) Reader as I never use it. I only use FeatureReaders and when I want to read schema's I set the Features To Read to Schema Features.

Here's a test dataset, I'll try the above

Works for me:

thank you @nielsgerrits​ this is great.

Adding on to the above ... I'd like to add an Attribute Manager to the passed features, add/remove some, and write to a FGB. However, only the schema is coming through ..

the attributes of '%M_CSCL%' objects are ..

How can we pass the feature geometry/attributes through this process as well ?

I think you forgot the next step, adding another FeatureReader to read the data from the featureclass which you tested.