Why does this string function not update? MQL

I'm super confused right now, been at this for some time. I'm trying to figure out why this string function won't update the string when I believe the if statement to be true.

void OnTick()
{
 string aboveprofit = "";
 for(int b=OrdersTotal()-1;b>=0;b--)
  {
   if(OrderSelect(b,SELECT_BY_POS,MODE_TRADES))
   if (OrderSymbol()==Symbol())
    {
     if(OrderSymbol()==OP_SELL)
       {
         OrderModify(OrderTicket(),OrderOpenPrice(),Bid+(150*_Point),OrderTakeProfit(),0,CLR_NONE);
         if(Ask < OrderOpenPrice())
           {
             abovepoint = "321";
           }
       }
     if(OrderSymbol()==OP_BUY)
       {
         OrderModify(OrderTicket(),OrderOpenPrice(),Ask-(150*_Point),OrderTakeProfit(),0,CLR_NONE);
         if(Bid > OrderOpenPrice())
           {
             abovepoint = "123";
           }
       }
    }
 }