[amibroker] help with HighestSince in loop

[James]

In the code below, I cannot use an array after HighestSince. Can someone help 
explain how can I achieve this without using an array? Reverse equals inlong 
==0.
 
TIA,
James
 
if( inlong ) 
   { 
      if(High[ i ] > HighestSince( reverse, H, 1)) 
      { 
         nBarNet [i] = Max(findNthLowerLow( n, currentBar, dflt ), nBarNet [ 
i-1]); 
      } 
      else
      { 
         nBarNet [i] = nBarNet [ i-1];