Hello sattimes,
I understood the method you are using to trade 5 minutes data. For Alerts you need to draw trend lines and set alerts. This is a tedious process and you may also require sound (WAV) files for audio alerts.
I think i may be having some AFL for Gap trading. Not sure about it. In the mean time you can try the one i have attached. It is good system if used properly. Not all signals may not be valid.So stoploss and money management must. I checked it on todays 5 minute data of Mc dowell, Reliance, tata motors,SBI ( gave good buy signals) and Tisco (sell). This AFL is used only for intraday trading. This AFL requires de Date Time Plugin which is available at Amibroker website Third party area.If you google directional day filter you may find a file detailing the technique of using this AFL for intraday trading.
Kindly note i do not daytrade or use this AFL. But i watch intraday movements.
Regards
Saji