Create a relationship between excel files and Shapefile and publish it in an FGDB

I'm trying to create a relationship (1: n) between a shapefile and four tables and publish it in an FGDB. I created two columns with AttributeCreator (goedb_feature_has_relationships) and (geodb_oid).

As a writer, I have four options (see the following figure). I selected (Esri Geodatabase (File Geodb)).

I noticed that format attributes from my writer doesn't contain (goedb_feature_has_relationships) and (geodb_oid). It is the same with other writers. Because of this, no relationship is created in the end.

every excel file has a relationship (1:n) with my shapefile.

I would be grateful if you could tell me why the problem is. Many Thanks.