need help to code shift for 2 indicator buy condition

[Ali Khawaja]

hi there

I have 2 indicators, the first one is the main indicator The buy order is activated when the buy signal occurs, provided 

and  the second indicator was given a buy signal with a number shift between 1 to 12 bars, ask for help in how to do the Buy condition code  MQL4

Example

  int Siftt1 =  (1||2||3||4||5||6||7); 

 

  Buy   = (Trend1(0,0)>Trend1(1,0))&&(Trend2(2,Siftt1)>Trend2(3,(Siftt1);