how can i achve restricting fields based on collaborators and demand

[MakhanlalM]

Hello ServiceNow Developer, 

i have an requirement : i have a  choice field in demand form which is "u_confidencial" which is Public , confidencial and strictly confidencial .

1 . When the demand is Strictly Confidential 

• Only the Demand Manager (u_demand_manager) and Collaborators (u_collaborators) should have access to all fields.

• Other users should only be able to see:

  • short_description

  • description

I have tried

• I created ACLs without using roles, based on:

  • Demand Manager

  • Collaborators (list field)

• I was able to restrict access so that only Demand Manager and Collaborators can see if it's strictly confidencial but I also tried creating field-level ACLs for short_description and description, but it is still not working as expected.