Excel Help - Back test some data

hoping someone can help me out with this no doubt trivial problem

I am trying to back test some data in excel and getting the exit to determine profitability of a trading system is proving quite difficult, hoping someone with better excel skills can help with this .

So I want to enter the position say if the closing price on day 0 is below say the 20 day simple moving average, which is simple I get how to figure that out, but the exit of the system is a little more complicated I want to exit on the first profitable day.

so say the first day after is positive then I would want to exit then at the closing price, if it is not positive I would hold out until day 2 and exit then.If day 2 is positive (from your entry price on the close of day 0) . If day 2 is not positive then is goes to day 3 etc until you get a positive exit or 10 days pass in which case you would just sell and take a loss if that is the case.

I appreciate any input, I have been trying to do this if multiple if statements just cant get there.