set formatRecord to _support's asOptionalRecordParameter(formatStyle, {class:(number format record), basicFormat:_support's RequiredValue, minimumDecimalPlaces:missing value, maximumDecimalPlaces:missing value, minimumSignificantDigits:missing value, maximumSignificantDigits:missing value, decimalSeparator:missing value, groupingSeparator:missing value, roundingBehavior:missing value}, "using")