Complete trade first and get new signal

Question

I've been trying for the build backtest strategy. My signal based flip flop. How can i complete this trade and ignoring any new signals?

var longPosMem = false
var shortPosMem = false 

longPosMem := long ? true : short ? false : longPosMem [1]
shortPosMem := short ? true : long ? false : shortPosMem [1]

// Defines Trade Signals
buy = long and longFiltersApproval and longAdx and not (longPosMem [1])
sell = short and shortFiltersApproval and shortAdx and not (shortPosMem [1])


EntryExit = strategy.position_size == 0


if buy and EntryExit
    strategy.entry('Long Entry', strategy.long)
strategy.exit('Exit Long', 'Long Entry', stop=Long_StopLoss, limit=Long_TakeProfit)

if sell and EntryExit
    strategy.entry('Short Entry', strategy.short)
strategy.exit('Exit Short', 'Short Entry', stop=Short_StopLoss, limit=Short_TakeProfit)

My bakctest strategy looks like this: My bakctest looks

Sorry for my bad english. Thank's