I am currently working on an ADF Application & I just get a securityContext property by using this groovy expression "adf.context.securityContext.get('dCode')" and it will gives me this below error.

error:
Exception in expression "dCode" bound parameter value expression : oracle.jbo.script.ExprSecurityException Accessing the sessionScope property on class oracle.adf.share.http.ServletADFContext is not permitted.
at "dCode" BoundParameter line 1

I tried my best to solve this error but I can't. Please help me to resolve this error.

Thanks