description: null package_name: ca.on.health.idms.agreementmvp derivation: constraint name: ExtensionFormula-Variable type: Extension elements: url: pattern: {type: Uri, value: 'https://health.gov.on.ca/idms/fhir/StructureDefinition/Extension-Formula-Variable'} index: 0 value: choices: [valueString] index: 2 valueString: {type: string, choiceOf: value, index: 3} package_version: 3.0.2 class: extension kind: complex-type url: https://health.gov.on.ca/idms/fhir/StructureDefinition/Extension-Formula-Variable base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0