After a long search I finally found a jurik alerting indicator from famous Igorad, but the last bars are not shown, a vertical line instead. Can somebody remove that, so that it shows the value on last bars too?
Maybe somebody can describe in words, how the "bands mode" is calculated?
In general, how do percent filter (PctFilter) work?

extern int TimeFrame = 0; //Time Frame in min
extern int Price = 0; //Price Mode (0...10)
extern int Length = 14; //Period of smoothing
extern double Phase = 100; //-100...100
extern int Shift = 0; //Shift in bars
extern double PctFilter = 0.5; //Percent Filter
extern int FilterMode = 2; //0-final smoothing,1- 1st pre-smoothing,2-2nd pre-smoothing,3-without pre-smoothing
extern int ColorMode = 1; //Switch of Color mode (1-color)
extern int SignalMode = 1; //Switch of Signal mode(0-off,1-on)
extern int AlertMode = 0; //Sound Alert switch(0...2)
extern int WarningMode = 0; //Warning Mode (0-off,1-on)
extern int VisualMode = 0; //0-Filter,1-Bands