Simple auto robot based on market price changes.

I am a new trader and am looking for a simple MT5 automated system using a modified version of the trailing stop loss. A manual buy or sell will start the cycle. A high indicator is used for a buy order and a low indicator for a sell order.  A high or low spread is imputed in starting the cycle and only one order will be open at any time until the cycle is manually closed. When the high indicator is equal to, or more than the buy spread compared to the current buy market price the buy is closed and a sell order opened and monitored between the low indicator and the market sell price. I expect a manual trade to be opened Monday morning and closed Friday afternoon. The spread values will need to be flexible to allow various decimals for trading with different forex or commodities. In order to cut down on the computer calculations I suggest a timing interval of between 10 seconds and 60 seconds to check the spread calculations if required. 

Inputs: Lot size, xxx which is the buy spread, yyy which is the low spread, TI for the timing interval.