Simple Coding Help - No Promise.

Plot(C, "Close",colorLightGrey,styleCandle);

buy = C > ref(H,-1);
sell = C < ref(L,-1);

//where,

//C = current days close ,
//ref = is used when u want to use historical values,
//-1 = previous bar ....-2 prior to previous bar and so on......,
//H = high of the day,
//L = low of the day.

Buy=ExRem(Buy,Sell);
Sell=ExRem(Sell,Buy);

//this exrem func will eliminate repetative signals once the buy/sell condition met,


PlotShapes( Buy*shapeUpArrow, colorWhite, 0, Low );
PlotShapes( Sell*shapeDownArrow, colorWhite, 0, High );

Buy=Close > Ref(H,-1);
Sell=Close < Ref(L,-1);
Filter=Buy OR Sell;
SetOption("NoDefaultColumns", False );
AddColumn( DateTime(), "Date", formatDateTime );
AddColumn( IIf( Buy, 66, 83 ), "Signal", formatChar );

Filter = Buy1 OR Sell1 OR Short1 OR Cover1;
AddColumn(IIf(Buy1, BuyPrice, 0),  "Buy", 6.2);
AddColumn(IIf(Sell1, SellPrice, 0),  "Sell", 6.2);
AddColumn(IIf(Short1, ShortPrice, 0),  "Short", 6.2);
AddColumn(IIf(Cover1, CoverPrice, 0),  "Cover", 6.2);
AddColumn(Close,"Close",1.2);