Add news Filter to existing mt4 EA Robot

Description I have an existing robot that i want to add a news filter to. This news filter should be based on the Forex Factory Calender. I should be able to back test and past news events. The news filter should be able to: * select news events that are effecting a pair * filter high, medium or low impact news. * select a time not to trade before and after high, medium and low impact news. * have an extra custom category of news which will be extra high, we should be able to filter on this and select no trading time frames for this.