How we can get the DFF segment bean reference from oaf page to make the dff segment field to long te

Hi Team,

We have the customer requirement to make the dff segment field to long text/ Increase the size of the dff field on oaf screen.

How we can get the DFF segment bean reference from oaf page to make the dff segment field to long text/Increase the size of the dff field.

Navigation : Employee Self-Service  Responsibility  => Employee Self-Service => My Profile => Select an Action as “Loan “ =>  Click on “Award New Compensation” button => Select Type as “Mobile Allowance ”

Here “Mobile Allowance ” is a DFF context  and “Comments” is a dff segment field which is populating from global data elements of dff “Add'l Element Entry Info.”