ClosePositionRequest Syntax

REQUEST:
Kindly assist with the correct PYTHON syntax for ClosePositionRequest for a specific ticker eg. SPY

market_order_data = ClosePositionRequest(
symbol= str(symbol.upper()),
percentage = str(100)
#qty = str(1.0)
)

ERROR MESSAGE:
alpaca.common.exceptions.APIError: {“code”: 40010001,“message”:qty or notional is required"}