[amibroker] Applystop turned on only after n days

["mp61276127" <mpalmer@xxxxxxxxxx>]

The Problem: Don't want my Applystop to be effective until in the 
trade for n days.  

Tried using the code below but I get an "Error 6" code.  Help tells me 
that I must act on Boolean expression (True or False) and not on 
arrays. I'm still having trouble understanding If,Else, For statements 
and how they are used in Amibroker.  It looks to me like I am working 
on a boolean statement.  

Any help here would be much appreciated.

Thanks
Mark

MY CODE:

Buy = Buy Rules;
Sell = Sell Rules;

for(i=0; i<BarCount; i++)
  {
    intrade = ExRem(Buy,Sell);
    DaysInTrade = BarsSince(Buy[i]>20)
    if(DaysInTrade)
      {
        ApplyStop(StopTypeTrailing, StopModePercent,15);
      }
  }





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