Decriptive Flexfield to be filled with the same value as another field

Summary:

In order to add "Job Type" as a search filter in our career site I created a DFF, I would like this DFF to be filled with the same value as the one completed in the field "Job Type" (as if it were a copy)

Do you think it is possible and if so how?

Content (required):

In order to add "Job Type" as a search filter in our career site I created a DFF, I would like this DFF to be filled with the same value as the one completed in the field "Job Type" (as if it were a copy)