Trading robot on MQL4 using ParabolicSAR

Hello there,

I am looking for a trading robot specifically trading the Parabolic SAR. The inputs are:-

1. Enter a new trade every time the SAR dot forms in the opposite direction. E.g. Assuming the dots have been forming on an uptrend and then a new dot forms above the candles signalling a down trend. Open a new trade going short.
2. Stop loss is 15 pips, and tp is 30. Have a trailing stop loss of 15pips. 
3. This is to work on 30mins time frame. 

thanks,

Goodwill