Need help with coding

Please help me with coding retracements with william%R.
I want to generate alert when WPR closes below -50 when on uptrend.

Some time passed, but have you found anyone ? Have you tried to do it themself ? Software ingeneers may take some serious cash even for doing simple things like that so be wary. In what language it's need to be done ? I may ask my fellow programmer about this.