Forge Custom_UI Custom field. Unable to submit value during create issue

I am requesting for help here.
I am uncertain of what am I doing wrong here.
Could someone please give some help with this.
I have a select type forge custom ui customfield.
I can add it to the create screen and perform it’s required action example:
my dropdown list is working and selecting the values to be shown in the select list is also working.
The only problem I have is when I submit the create issue.
and I went to my created issue the forge custom_ui field is empty.
why is that and I need help to identify, as I have been trying for quite sometime now.
Short footage:
Screen Recording 2024-02-15 at 15.17.21