Breakeven hits my stop immediately

Hi everyone, 

I am wondering what is the correct way of moving the SL to Breakeven without Your stoploss triggers immediately? 

What I am trying to achive is to Close 2/3 of positions when the initial TP(2 pips) is reached and move the SL to the Breakeven and let the rest of the position move. 

Here is what I have tried but the issue is that my SL hits instantly. 

     if (position.Pips >= TP)
                        {
                            double entryPrice1 = position.EntryPrice;
                            if(position.TradeType == TradeType.Buy)
                            {
                                entryPrice1= position.EntryPrice + 1 / 4;
                            }
                            else
                            {
                                entryPrice1 = position.EntryPrice - 1 / 4;

                            }
                            position.ModifyStopLossPrice(entryPrice1);
                            BreakevenDone[position.Id] = true;
                        }