def pnl_classic(model_infos):

	BUY_COL = 4
	SELL_COL = 5

	filename		= model_infos[0]
	period			= model_infos[1]
	ohlcbs 			= model_infos[2]
	signals 		= model_infos[3]
	calc_dd 		= model_infos[4]


	#print(len(ohlcbs),len(signals))
	#exit()
	#print(ohlcbs)

	trades = 0
	pnl = 0
	max_dd_percent = 0

	dt_pnl = []

	for r in range(1,len(ohlcbs),1): # signal on line N has to be traded on line N+1, thus no PnL on line 0
		signal = signals[r-1] # TODO: Are the signals themselves rigth? Check it out at some point!
		dpips  = 0 # It's really importtant to get this one nulled for rows that have 0 signal
		if ( signal != 0): # it was a valid signal and we execute it
			trades += 1
			if (signal>0):
				dpips = ohlcbs[r][BUY_COL]
			else:
				dpips = ohlcbs[r][SELL_COL]
			pnl += dpips # dpips was nulled, so it's OK to add it

		# DEBUG - TEST THIS NEXT TODO!
		#if (filename=="54_16055-19155_3000_0.9_USDCAD_240 1075_export1.csv" and period ==8):
		#	# maybe add DATE/time for the signals and prices columns to make sure we can see precisely the right rows
		#	print("DEBUG:", ohlcbs[r][0],ohlcbs[r][1],ohlcbs[r][2],ohlcbs[r][3], ohlcbs[r][4], ohlcbs[r][5], signals[r], dpips, pnl )


		dt_pnl.append(pnl)

	if (calc_dd == True):
		max_dd_percent = drawdowns(np.array(dt_pnl))
	else:
		max_dd_percent = 0 # initially we don't use that fot the sake of CPU resources

	if pnl > 0:
		#print(filename, period, trades, pnl, max_dd_percent)
		return [ filename, period, trades, pnl, max_dd_percent ]
	else:
		return None