Do you mean you created your own GDL wall end object?
If so then you need to set its subtype to 'Wall End'.
There is a 'Subtype' button in the Details section of the GDL editor.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11