Alert on certain levels

[dowrich]

Hi all, i'm trying to add alert to an indicator, but only on certain levels:

if (Extend_Line) {
      for(i = 0; i < Maxbar; i++) {
         if (UpBuffer[i] > 0) {
            level = UpBuffer[i];
            for (c = i; c > 0; c--) { 
               if ((Open[c] > level && Close[c] < level)){ //Cancel Level                  
                  DrawLine ("H", i, c, level, Extend_Line_to_Background, Up_Fractal_Extend_Line_Color, Up_Fractal_Extend_Width, Up_Fractal_Extend_Style); 
                  if (Show_Validation_Candle) UpBuffer[i-2*dif] = level;
                  i += dif; 
                //(Low[c] <= level && Close[c] > level && Open[c] > level) || (Low[c] <= level && Open[c] > level && Close[c] > level && Ask > Open[c] - Alert Condition
               }
            }       
         }
      }

Basically I want to be alerted on Alert Condition, but on levels which are not canceled according to Cancel Level. Any help will be appreciated.