Need help with robots logic for opening and closing position.

I’ve programmed a robot that looks at RSI and ADX to decide whether to enter the market. the robots core logic states that if the RSI indicates the market is oversold and if the ADX is below a certain level the position then the robot buys into the market. The opposite applies for overbought markets 

the code I used for this logic is bellow

protected override void OnTick()
        {
            if (rsi.Result.LastValue <= Min & dms.ADX.LastValue < ADX)
            {
                Open(TradeType.Buy);
                Close(TradeType.Sell);
            }
            if (rsi.Result.LastValue >= Max & dms.ADX.LastValue < ADX)
            {
                Open(TradeType.Sell);
                Close(TradeType.Buy);
            }
        }

The problem with this is that the position should only open when the position is over brought or oversold and ADX is low. The position should however be allowed to close even when the ADX is high if the RSI has reversed from overbrought to oversold and vice versa. I tired separating out the IF statements, but the close logic interferes with each other and it REALLY DOESNT WORK.

protected override void OnTick()
        {
            if (rsi.Result.LastValue <= Min & dms.ADX.LastValue < ADX)
            {
                Open(TradeType.Buy);
            }
            else if (rsi.Result.LastValue <= Max)
            {
                Close(TradeType.Sell);
            }
            if (rsi.Result.LastValue >= Max & dms.ADX.LastValue < ADX)
            {
                Open(TradeType.Sell);
            }
            else if (rsi.Result.LastValue >= Min)
            {
                Close(TradeType.Buy);
            }
        }

Any sollutions to this problem would be much appricated. 

Thank you 

William