swift - Take a result in Researchkit from array of ORKQuestionResult in a string? -


can't find logic or solution of taking simple answer string in array of orkstepresult. working before :

                stepresults in taskviewcontroller.result.results! as! [orkstepresult]  {                 result in stepresults.results! {                     switch result.identifier {                     case "themaquestionstep":                         if let questionresult = result as? orkquestionresult {                             questionresultthema  = string(questionresult.answer?.objectatindex(0))                         }

after time , update (swift & researchkit), didn't. line make me crazy 1 :

questionresultthema  = string(questionresult.answer?.objectatindex(0))

if :

questionresultthema  = string(describing: questionresult.answer)

it give me right response, in array :

    (         6     )>


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