Help little program with stochastic

Hello everyone, I'll post a little program that I've done:

The program should report me 2 of the stochastic crosses that occur sussessivamente inclusion of 'AE in the graph instead of as soon as I insert the graphic print "DrawAllert (" cross 2 Time = "+ TimeToStr (curtime (), TIME_DATE) +" "+ TimeHour (curtime ()) + ":" + TimeMinute (curtime ()), 15,15, Green); "Updating the time every 2 or 3 min? there is something wrong but I can not figure out what help me?
Then I tried to get me to print the values ​​of "mainnow = iStochastic (NULL, 1, KPeriod1, DPeriod1, Slowing1, Mame thod1, PriceField1, 0, j);
signalnow = iStochastic (NULL, 0, KPeriod1, DPeriod1, Slowing1, Mame thod1, PriceField1, 1, j), "but if I do I print vaalori and compare them with the values ​​of the Mt4 stochastic oscillator are not the same and I always wondered why, know how to give me an explanation?
I thank you in advance

#property indicator_chart_window
    //+------------------------------------------------------------------+
    //| Expert initialization function                                   |
    //+------------------------------------------------------------------+
    extern int       KPeriod1     =  5;
    extern int       DPeriod1     =  3;
    extern int       Slowing1     =  3;
    extern string note3 = "0=sma, 1=ema, 2=smma, 3=lwma";
    extern int       MAMethod1    =   0;
    extern string note4 = "0=high/low, 1=close/close";
    extern int       PriceField1  =   0;

    int deinit()
      {
    //----
       ClearObjects();
       return(0);
      }
    void ClearObjects()
    {
      for(int i=0;i<ObjectsTotal();i++)
      { ObjectDelete(ObjectName(i)); i--; }
    }
    void DrawAllert(string text, int xdistance, int ydistance, color C=LightGray)
    {

             ObjectCreate         ("rect",OBJ_LABEL,0,0,0,0,0);
             ObjectSet            ("rect",OBJPROP_XDISTANCE,xdistance);
             ObjectSet            ("rect",OBJPROP_YDISTANCE,ydistance);
             ObjectSetText ("rect",text,20,"Times New Roman",C);
    }
    bool NewBar()
    {
       static datetime lastbar;
       datetime curbar = Time[0];
       if(lastbar!=curbar)
       {
          lastbar=curbar;
          return (true);
         
       }
       else
          return(false);
    }
    int start() {
       int limit;
       double mainnow, signalnow, mainprevious, signalprevious, mainafter, signalafter;
       int counted_bars=IndicatorCounted();
    //---- check for possible errors
       if(counted_bars<0) return(-1);
    //---- last counted bar will be recounted
       if(counted_bars>0) counted_bars--;

       limit=Bars-counted_bars;
       
       for(int j = 0; j <= limit; j++)
       {
       
       
          mainnow = iStochastic(NULL,1,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,j);
          mainprevious = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,j+1);
          mainafter = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,j-1);
          signalnow = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,j);
          signalprevious = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,j+1);
          signalafter = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,j-1);
         
          if( NewBar() && (mainnow>signalnow) && (mainprevious<signalprevious) && (mainnow>signalnow)))
           {
             DrawAllert("incrocio Time = "+ TimeToStr(CurTime(),TIME_DATE)+" " + TimeHour(CurTime())+":"+ TimeMinute(CurTime()),10,10,Green);
             DrawAllert("incrocio 2 Time = "+ TimeToStr(CurTime(),TIME_DATE)+" " + TimeHour(CurTime())+":"+ TimeMinute(CurTime()),15,15,Green);
           }
        }
       return (0);
       }