Created DFF in PER_ASG_DF need to tag this in Learning assignment criteria page

A Descriptive Flexfield (DFF) has been created in the PER_ASG_DF table (Person Assignment DFF); however, we are currently unable to link or tag it to the Learning Assignment Criteria page. We need assistance in configuring and enabling this DFF for use in Learning Assignment Criteria, as this is a high-priority requirement.Please find the attached screenshot for reference.

Oracle Engineer provided below comments that we can achieve this with FF. Please help if somebody is aware.

Oracle Fusion Cloud does not support direct tagging of DFFs from PER_ASG_DF in the Learning Assignment Criteria UI. However, this can be achieved by using a Fast Formula, which can then be attached to the learning assignment.