Hide Employee Rating in Overall Summary Section on Performance Review

Summary

I am attempting to hide the Employee Rating in the Overall Summary section on a performance review in page composer with the expression: #{pageFlowScope.pSectionTypeCode != 'OS'}

Content

I am attempting to hide the Employee Rating in the Overall Summary section on a performance review in page composer with the below expression, but it does not seem to work.  

#{pageFlowScope.pSectionTypeCode != 'OS'}

I am able to hide this field based for all sections, or for other criteria, such as performance template name.  But I am having trouble hiding it by SectionTypeCode.  Would love any recommendations on a better method or help with the expression.