Making Drop-Down field as readOnly for Initiator in HCM P & F

Hi Friends,

Thanks in advance,

My requirement is to make a drop-down field as Read-Only for Initiator and same field should be editable for Approver

Below is my logic at the Layout Level.

if($record.CONTROL_PARAM.ISR_MODE == "DISPLAY" |

   $record.CONTROL_PARAM.ISR_FORM_VIEW =="ISR_APPROVE" )

then

this.access = "readOnly"

endif

Regards,

Sridhar.J