Hi Catalin,

today I buy 3in1 Combo EA for 3 months,

tell me please, should I set something up in this EA for my indyvidual conditions, or, are all 4 strategies set, so that, I have nothing to do with them after instaling?

The parameters are all set up for best performance , but of course  the user may set them as they wish if they think it would be best other wise . I will release a new update with a whole lot of new parameters so you may choose what you think would be best for you . There are a lot of brokers out there and each one has their conditions , so the more customisable the EA , the better . As you may see in the description and in the setting of the EA , each strategy works best on some pairs , so I recommend that you respect that , for example don't use strategy 4 on eur/usd . If you set the EA on an eur/usd chart , set strategy 4 to false , it worked on eur/usd until 6 months ago , it doesn't work any more , only on gpb/usd and usd/jpy .Another thing is the max spread allowed on strategy 3 . Usually the gaps occur after midnight and the strategy is based on gaps , but at the same time , when the market opens the spreads are higher , so you may choose the the maximum spread you are comfortable with . 

With the magic numbers you must also pay attention , not to repeat them if you use the EA on multiple charts .