Modification of mt5 key reversal indicator to have alerts sent, not repaint and not to lag

I am looking for the modification of the ‘key reversal’ indicator. Currently the indicator works quite fine but the arrow appears after another 1 bar completes. This arrow should appear at the end of the formed bar and an alert should be incorporated and not lag and the arrow should not repaint once it is drawn on the chart

The system is based on the current close price and the alert should be at the close of the  bar and should be a once-off occurrence until the next arrow appears after the conditions in the indicator are met. The arrow must not repaint

Modifications to be made

• 1.       Arrows should appear when the condition of indicator are met and at the closed of the candle. find way to make non repaint
• 2.      filter out false signals to improve accuracy

At the end I need to 2 separate mt5 source files and executable files