Modification of Expert advisor

I have an ea that places buy stop and sell stop orders at the open of a new candle. It works on any of the candles i choose. Ea takes profit using trailing stop and can close orders at close of candle if i select that option. I want ea to be able to also place buy limit and sell limit orders at open of a new candle as well. So ea will have a check box so if i select buystop and buy limit, ea will place them at open of candle. If i decide to select buystop and sell stop, or only sell limit or sell stop and  buy stop, ea should be able to place them at open of candle respectively. This should be able to work on all candles. I have a time period on my ea which i set as desired and modification should be able to work with it.