Dwindling Value List: Is there a way to change messsage when all values have been used up from source list?

Hi all,

I have created a "Dwindling Value List" that appears to be working. 

However, after I have "assigned" all of the available values from the "dwindling list" as I build out records, I am presented with a default message that says "<no values defiend>". I understand the massage, but prefer the message to say something more specific and understandable to a User (and myself).

If I could customize the message to read: "All widgets have been assigned." or something that makes sense in the context of its use.

For example:

1. All available "People" have been assigned a "Task".
2. All available "Cars" have been "Rented" .

Is there a way to change the default message "<no values defiend>" when the available values are used-up when using "Dwindling Value Lists".

Screenshot attached.

Thanks in advance.

Image may be NSFW.
Clik here to view.