Doing Teamviewer when other person has a 4k and you don't it is so hard to control there screen as everything is so much smaller. Picking objects remotely is actually hard as pick box is reduced.I guess ok if you both have 4K.
have little to none experience with 3D but have some experience with google :
https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/convert-2d-polylines-to-3d-polylines-with-elevation/td-p/6305459
https://www.cadtutor.net/forum/topic/444-2d-linespolylines-to-3d-polylines/#comments
https://www.cadtutor.net/forum/topic/28327-convert-polylines-to-3dpolylines/
https://forums.augi.com/showthread.php?45963-2d-Polyline-to-3d-Polyline
dclnam :dialog {label=" AutoParcel ";initial_focus="utmsave";
spacer;
:boxed_row {label=" Fixed values ";
:edit_box {label=" Text Size "; key="txtsize"; alignment=left;}
:edit_box {label=" Decimal "; key="txtdec"; alignment=left;}}
:boxed_row {label=" Other options ";
:column {:text_part {key="tp_1";}:toggle {label="Area"; key="togarea";}:toggle {label="Perimeter"; key="togpri";}}
:column {:text {label="Prefix";} :edit_box {key="areaprefix";} :edit_box {key="priprefix";}}
:column {:text {label="Suffix";} :popup_list {key="areasuffix";} :popup_list {key="prisuffix";}}}
spacer;
:row {fixed_width=true;alignment=centered;
:button {key="utmsave"; alignment=centered;label=" Save ";}:cancel_button { label=" EXIT "; width=11;}}
}
you don't need to assign a key to the main dialog (key = "Title") and I think you don't need initial_focus if you set is_default = true for your "utmsave" button