Alternate glyph shapes by renaming glyphs

Hi, is there a possibility to show the altering glyph in edit window? It would be really helpful. Activating the feature “Italics” in the current case does not work.
The footer line in edit window shows the changing shape, also the rendered fonts work as expected.

You need to ‘type’ the alternate shapes with the Cmd+F dialog.

Thank you, Georg