How to make DFF field(attributes) uneditable or Disable through Form Personalization

How to make DFF field(attributes) uneditable or Disable through Form Personalization

When the Disposition Fields = ('Complete','Accept','Accept with Variance','Reject')

Then Disable or READ ONLY the DFF

Help -> diagnose -> custom code-> personalize

Condition:

Trigger Event: WHEN-NEW-ITEM-INSTANCE

Trigger Object: GMDQSMPL.SAMPLE_NO

Condition:

:GMDQSMPL.SAMPLE_DISPOSITION_DESC in ('Complete','Accept','Accept with Variance','Reject')

Action:

Type: Property

Object Type : Block

Target Object: GMDQSMPL

Property : UPDATE_ALLOWED

Value: False

It works and disable all the DFF field.

Result is OK: We can See the Result when the Disposition = Accept

Then all DFF is Disable or READ ONLY.