$extract returns error for decimal values

[simoneOnFhir]

$extract-Operation error on observation based extraction for decimal types:

HAPI-0389: Failed to call access method: java.lang.Error: Not the right type for Observation.value[x]: decimal

Questionnaire and Response attached.
Questionnaire-NumericExtract.json
QR.json

the following item causes the issues:

              {
                    "linkId": "baseDataDecimalWeight",
                    "answer": [
                        {
                            "valueDecimal": 23.5
                        }
                    ]
                }

(tested on HAPI FHIR 7.2.0)

[simoneOnFhir]

Observation.value[x] can't be decimal. facepalm

nevermind

[simoneOnFhir]

No. My point stands. From the SDC-Specification: "If a questionnaire item has the questionnaire-unit extension, the Observation.value SHOULD be a valueQuantity rather than integer or decimal and the units should be taken from the extension value."

Since the item does have a unit-Extension, the decimal value SHOULD be extracted into Observation.valueQuantity.value where no datatype mismatch occurs.