Problem with simple exploration

[40_Flax]

Hello,
I am having problem with a simple exploration as it does not return any results and i am puzzled as to why because i have done other exploration which do return results. If i plot signal on the chart, i will show on the chart but nothing on the explo results !!

// One year ROC is > 20 (prior uptrend)
AccuROCP = Param("Periods", 253, 1, 1000, 10 );
AccuROC = ROC(C, AccuROCP);
Uptrend = AccuROC > 20;

//CHART PLOTTING
Plot(Close,"", colorPink, styleBar);
PlotShapes(shapeHollowUpArrow*Uptrend, colorGreen, 0,L,-30);

// EXPLORATION
AddColumn(Close, "Last Close", 1.3, colorDefault, colorDefault, 100);
AddColumn(Uptrend, "Uptrend", 1, colorDefault, colorGreen, 80);
AddTextColumn(FullName(), " Company Name", 1, colorDefault, colorDefault, 500);

Thank you for your help.

[fxshrat]

1. When inserting code to post then please use code tags (it is mandatory). See here
2. You forgot to add Filter variable. It is essential part of every Exploration.

// One year ROC is > 20 (prior uptrend)
AccuROCP = Param("Periods", 253, 1, 1000, 10 );
AccuROC = ROC(C, AccuROCP);
Uptrend = AccuROC > 20;

//CHART PLOTTING
Plot(Close,"", colorPink, styleBar);
PlotShapes(shapeHollowUpArrow*Uptrend, colorGreen, 0,L,-30);

// EXPLORATION
Filter = 1;
AddColumn(Close, "Last Close", 1.3, colorDefault, colorDefault, 100);
AddColumn(Uptrend, "Uptrend", 1, colorDefault, colorGreen, 80);
AddTextColumn(FullName(), " Company Name", 1, colorDefault, colorDefault, 500);

[40_Flax]

Thank you much for your quick reply.