MQL4 automatic stop - mql4

Question

My Martingale EA should be stopped automatically if the previously manually set limit has been reached or exceeded. The last trade should expire normally and not be interrupted.
So far, I've tried the following code, without interruption, etc. the code works fine.
I also heard about RemoveExpert, but I do not know how to do it. Am grateful for any help :)
enum tradeD{Buy=1, Sell=2};
input tradeD TradeType = Buy;
input double Initial_Lot = 0.01;
input double Lot_Factor = 2;
input int Max_Spread = 30;
input double Pct_SL = 0.1; // Percentage Stop Loss
input double Pct_TP = 0.1; // Percentage Take Profit
input int Magic_Number= 73726;
input int interrupt = 1,0000;
input bool StopEA = false;
int OnInit()
{
return(INIT_SUCCEEDED);
}
void OnDeinit(const int reason)
{
}
int start()
{
if (StopEA == true) { return(0); } //This line will skip the execution of EA.
}
void OnTick()
{
if(OpenOrders()==0 && (SymbolInfoInteger(Symbol(),SYMBOL_SPREAD)<Max_Spread||Max_Spread==0)){
if(TradeType==Buy){
double flot=Initial_Lot;
double etp=Ask+(Ask*(Pct_TP/100));
etp=NormalizeDouble(etp,Digits);
double esl=Ask-(Ask*(Pct_TP/100));
esl=NormalizeDouble(esl,Digits);
if (ask <= interrupt) { StopEA = true; return(0); }
if(lastProfit()<0){
flot=NormalizeDouble(lastLot()*Lot_Factor,2);
}
int snd=OrderSend(Symbol(),OP_BUY,flot,Ask,10,esl,etp,NULL,Magic_Number,0,clrAliceBlue);
}
if(TradeType==Sell){
double flot=Initial_Lot;
double etp=Bid-(Bid*(Pct_TP/100));
etp=NormalizeDouble(etp,Digits);
double esl=Bid+(Bid*(Pct_TP/100));
esl=NormalizeDouble(esl,Digits);
if (bid >= interrupt) { StopEA = true; return(0); }
if(lastProfit()<0){
flot=NormalizeDouble(lastLot()*Lot_Factor,2);
}
int snd=OrderSend(Symbol(),OP_SELL,flot,Bid,10,esl,etp,NULL,Magic_Number,0,clrAliceBlue);
}
}
//checkProfit();
}
int checkProfit(){
int total=0;
for(int i=OrdersTotal()+5; i >= 0; i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)){
string ordsymB = OrderSymbol();
int ordtypeB =OrderType();
int magicnB = OrderMagicNumber();
int magicn=magicnB;
double ordProfit=OrderProfit();
int tick=OrderTicket();
double oLots=OrderLots();
if(ordsymB==Symbol() && magicnB==Magic_Number){
double pctBalT=AccountBalance()*(Pct_TP/100);
double pctBalS=AccountBalance()*(Pct_SL/100);
if(ordProfit>=pctBalT){
int clo=OrderClose(tick,oLots,Close[0],10,clrAntiqueWhite);
}
if(ordProfit<0 && MathAbs(ordProfit)>=pctBalS){
int clo=OrderClose(tick,oLots,Close[0],10,clrAntiqueWhite);
}
}
}
}
return (total);
}
int OpenOrders(){
int total=0;
for(int i=OrdersTotal()+5; i >= 0; i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)){
string ordsymB = OrderSymbol();
int ordtypeB =OrderType();
int magicnB = OrderMagicNumber();
int magicn=magicnB;
if(ordsymB==Symbol() && magicnB==Magic_Number){
total++;
}
}
}
return (total);
}
double lastProfit(){
double total=0;
datetime lastTime=0;
for(int i=OrdersHistoryTotal(); i >= 0; i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_HISTORY)){
string ordSym=OrderSymbol();
int ordType=OrderType();
datetime ordTime=OrderOpenTime();
double ordLot=OrderLots();
double ordOp=OrderOpenPrice();
int ordMag=OrderMagicNumber();
double ordProfit=OrderProfit();
if(ordSym==Symbol() && ordTime>lastTime && ordMag==Magic_Number){
lastTime=ordTime;
total=ordProfit;
}
}
}
return(total);
}
double lastLot(){
double total=0;
datetime lastTime=0;
for(int i=OrdersHistoryTotal(); i >= 0; i--)
{
if(OrderSelect(i,SELECT_BY_POS,MODE_HISTORY)){
string ordSym=OrderSymbol();
int ordType=OrderType();
datetime ordTime=OrderOpenTime();
double ordLot=OrderLots();
double ordOp=OrderOpenPrice();
int ordMag=OrderMagicNumber();
if(ordSym==Symbol() && ordTime>lastTime && ordMag==Magic_Number){
lastTime=ordTime;
total=ordLot;
}
}
}
return(total);
}

Answer 1

if(tick_counter>=ticks_to_close)
{
ExpertRemove();
Print(TimeCurrent(),": ",__FUNCTION__," expert advisor will be unloaded");
}