Page Composer Read Only Failure

Summary:

Attempting to mark the "Posting Description" field to "Read Only" using the following EL expression
#{securityContext.userInRole['ST_HR_REC_ADMIN_SUPER_USER_TA_GBL_DR_DATA,ST_HR_REC_ADMIN_TA_LOC_DR_DATA']}

The requirement is to set the field to Read Only "False" based on the Security Roles. but the attempt fails because once the EL Expression mentioned above is entered, we see that "Read only" changes from "False" to "True".

We have described it in detail within the document along with screenshots

We see the following error message when using

#{!securityContext.userInRole['ST_HR_REC_ADMIN_SUPER_USER_TA_GBL_DR_DATA,ST_HR_REC_ADMIN_TA_LOC_DR_DATA']}