How to enable & disable a checkbox in multirecord block of oracle forms

Hi All,

We have a requirement to enable/disable  some records in a multirecord block of oracle custom  form.

Able to achieve functionality except for checkbox  which is not getting greyed out in a multirecord block

Tried with set_item_property & set_item_instance_property but does not work out for a check box

Tested logics #

Set_item_property #  enable/disable the entire block items  with the last record status. (Does not set the property for individual record, updates the entire block records)

Set_item_instance_property # Do not have enable property. Alternately if insert allowed & update allowed property is set then all text items except checkbox works as required