Block code feature

Hello Everyone
i am having issue with a feature called Block Codes. its actually inside the customer account.
in the form when i select the prefix its not creating any entry in the database.
so for testing purpose i actually put that entry manually. and its not working still
this is the screenshot from my database.

image

can someone advice me why its not working do i have wrong pattern?

thanks

Hello,
You may please log the concern https://jira.astppbilling.org