Error while compiling

//+------------------------------------------------------------------+

//| CW 1.001 |

//| Owner: Ajayi Emmanuel |

//| Email: ajayronny2016@gmail.com|

//+------------------------------------------------------------------+

#property copyright "Ajayi Emmanuel"

#property version "1.001"

#property script_show_inputs

input int lotSize = 0; // Set to 0 for minimal lot size

input int positions = 3;

// Buy condition

bool BuyCondition() {

return (iCCI(_Symbol, _Period, 20, PRICE_CLOSE, 0) > 100 && iWPR(_Symbol, _Period, 14, 0) > -20);

}

// Sell condition

bool SellCondition() {

return (iCCI(_Symbol, _Period, 20, PRICE_CLOSE, 0) < -100 && iWPR(_Symbol, _Period, 14, 0) < -80);

}

// Entry function

int OnCalculate(const int rates_total,

const int prev_calculated,

const datetime &time[],

const double &open[],

const double &high[],

const double &low[],

const double &close[],

const long &tick_volume[],

const long &volume[],

const int &spread[]) {

int positionsOpened = 0;

for (int i = positions - 1; i >= 0; --i) {

if (BuyCondition()) {

OrderSend(_Symbol, OP_BUY, lotSize, Ask, 3, Ask - (2 * ATR(_Symbol, _Period, 14, 0)), Ask + (2 * ATR(_Symbol, _Period, 14, 0)), "Buy Order", 0, 0, Green);

positionsOpened++;

}

else if (SellCondition()) {

OrderSend(_Symbol, OP_SELL, lotSize, Bid, 3, Bid + (2 * ATR(_Symbol, _Period, 14, 0)), Bid - (2 * ATR(_Symbol, _Period, 14, 0)), "Sell Order", 0, 0, Red);

positionsOpened++;

}

}

// Check for exit conditions

if (positionsOpened > 0 && (iCCI(_Symbol, _Period, 20, PRICE_CLOSE, 0) < 100 && iWPR(_Symbol, _Period, 14, 0) < -20) ||

(iCCI(_Symbol, _Period, 20, PRICE_CLOSE, 0) > -100 && iWPR(_Symbol, _Period, 14, 0) > -80)) {

for (int i = 0; i < positionsOpened; ++i) {

OrderClose(OrderGetTicket(), OrderLots(), OrderClosePrice(), 3, Yellow);

}

}

return (positionsOpened > 0) ? rates_total : 0;

}