DFF value Japanese half-width character

Summary:

Is it possible to create DFF Attribute and restrict only can be entered with Japanese half-width character?

Content (please ensure you mask any confidential information):

We have requirement to create DFF Attribute and restrict the value only can be entered with Japanese half-width character.

Is there any way we could do that?

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):