Personalize Life Years field in Mass Additions form

Dear all,

i have requirement to disable/read-only Life Years field in Mass Additions form.

i already try for different combination :

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Condition

Trigger Event     : WHEN-NEW-ITEM-INSTANCE

Trigger Object    : MASS_ADDITIONS.LIFE_YEARS

Action

Seq : 1

Type : Message

Message Type : Show

Message Text : It works!

Seq : 2

Type : Property

Object Type : Item

Target Object : MASS_ADDITIONS.LIFE_YEARS

Property Name : INSERT_ALLOWED (ITEM-INSTANCE)

Value : FALSE

only works for message

------------------------------------------------------------------------------

same condition

Seq : 2

Type : Property

Object Type : Item

Target Object : MASS_ADDITIONS.LIFE_YEARS

Property Name :ENABLE

Value : FALSE

only works for message

-------------------------------------------------------------------------------

same condition

Seq : 2

Type : Property

Object Type : Item

Target Object : MASS_ADDITIONS.LIFE_YEARS