Not getting First name and Last name data responce on export responces api call

[dipenpatel235]

Hello..

in below api i want also First name and Last name data . so what param i need to add ?
i have try to adding sField = "First name" but not getting data.

raw_data <- call_limer(method = "export_responses",
params = list(iSurveyID = 12345,
sDocumentType = "csv",
sLanguageCode = "en",
sCompletionStatus = "complete",
sHeadingType = "code",
sResponseType = "long"))
base64_to_df(raw_data)

Thanks
Dipen Dalsaniya