I think you can make this work, but you need to:

• Change the fme_feature_type_name in the schema feature to sentierisat_@Value(_timestamp). You can do this using an AttributeCreator.
• Change the fme_feature_type in the data features to sentierisat_@Value(_timestamp).
• Enable checkbox Dynamic Schema Definition in the writer.

Thanks, but i don't understand where to insert the AttributeCreator

On the connections between the FeatureReader and the Writer.

If you want to create a dynamic flow using the schema feature as you print screened, the writer used the attribute fme_feature_type_name from the schema feature and fme_feature_type from the data features to get the relation between the 2. This is why you need to change both.

Ok, but i don't see "fme_feature_type" in the data features

Alternatively i already have a field in my schema table called "_dirname" whose value is the same as the table name i want to obtain ("sentierisat_20231215"). How can i use this value to generate dynamic postgis table name creation?

If you click the magnifier glass to inspect the feature, click the record in the table and open the "feature information" window, you can see the unexposed attributes.

You can use the value from one attribute in another one, by selecting the attribute "_dirname" in the value field in the AttributeCreator.

I've tried multiple times, but I really can't figure out how to extract the 'fme_feature_type' attribute from the data features to apply the AttributeCreator as you suggested.