(Not sure) Impossible to set `PopupMenu:VALUE` due to wrong type

[ChrisInBed]

In GUI apps, when I tried to set a string value to PopupMenu:VALUE, there will be error saying you cannot convert a StringValue type to Structure type. Because there is no way to create a Structure type value in kOS script, I think PopupMenu:VALUE is in fact a readonly value.

declare global gui_edl_load_options to gui_edl_load_box:addpopupmenu().
set gui_edl_load_options:value to "entry".  // buggy: `value` is a structure type, but "entry" is a string

I'm not sure if this is a bug; it could also be that I haven't grasped the correct usage.