Does SDC Smart App supports below extension?
http://build.fhir.org/ig/HL7/sdc/StructureDefinition-sdc-questionnaire-enableWhenExpression.html
I tried to use enableWhenExpression from this resource (http://community.fhir.org/t/how-do-i-use-enablewhenexpression/1983) and uploaded the questionnaire to SDC Smart App. But it doesn't work as expected.