I am trying to add multiple selections in the drop-down extension in Questionnaire, but it's not working. Please check above extension, which I use:
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
"valueCodeableConcept": {
"coding": [
{
"system": "http://hl7.org/fhir/questionnaire-item-control",
"code": "drop-down",
"display": "Drop down"
},
{
"system": "http://hl7.org/fhir/questionnaire-item-control",
"code": "multi-select",
"display": "Multi-select"
}
],
"text": "Drop down (multi-select)"
}
}
]