Not able to hide the Document record DFF based on EL expression

Summary:

We have used EL expressions to hide the DoR DFF for the user who are creating the DoR. However the flexfield becomes visible to the approval hierarchy to update. To achieve this we used the following EL expression - "Rendered = #{pageFlowScope.SameUserLoggedInFlag=='N'?true:false}" which is working as expected in responsive UI. However, this EL expression is not working in the business rule condition in Redwood.

We are migrating from responsive UI to redwood for the client and require the same customisation for the DoR Dffs. Please help with the correct condition expression to be entered in the business rule to achieve the same behaviour.