How do I make a watchlist column entry display blank instead of "double.NaN"?

[number9]

The following code is an example of how I set up some of my custom watchlist columns. It displays "1.0" when the condition is met and highlights in the color I want. When the condition is not met, it displays "NaN". Is there a way to have the result display nothing (blank) instead of "NaN"? Again, the main function of the following code is irrelevant. I am only concerned with how it is displayed and simply want to be able to apply a workaround or fix to my other codes. Thanks.

plot value = if StochasticSlow()."SlowK" is greater than StochasticSlow()."SlowK" from 1 bars ago and
                       StochasticSlow()."SlowK" from 1 bars ago is greater than StochasticSlow()."SlowK" from 2 bars ago
                    then
                       StochasticSlow()."SlowK" is greater than StochasticSlow()."SlowK" from 1 bars ago and
                       StochasticSlow()."SlowK" from 1 bars ago is greater than StochasticSlow()."SlowK" from 2 bars ago else double.naN;

assignbackgroundcolor(if value is true then color.green else color.black);

 

[SleepyZ]

The following code is an example of how I set up some of my custom watchlist columns. It displays "1.0" when the condition is met and highlights in the color I want. When the condition is not met, it displays "NaN". Is there a way to have the result display nothing (blank) instead of "NaN"? Again, the main function of the following code is irrelevant. I am only concerned with how it is displayed and simply want to be able to apply a workaround or fix to my other codes. Thanks.

plot value = if StochasticSlow()."SlowK" is greater than StochasticSlow()."SlowK" from 1 bars ago and
                       StochasticSlow()."SlowK" from 1 bars ago is greater than StochasticSlow()."SlowK" from 2 bars ago
                    then
                       StochasticSlow()."SlowK" is greater than StochasticSlow()."SlowK" from 1 bars ago and
                       StochasticSlow()."SlowK" from 1 bars ago is greater than StochasticSlow()."SlowK" from 2 bars ago else double.naN;

assignbackgroundcolor(if value is true then color.green else color.black);

This revised code seems to work.

def s = reference StochasticSlow()."SlowK";
plot value = if s is greater than s from 1 bars ago and
                s from 1 bars ago is greater than s from 2 bars ago
             then 1
             else 0;
value.AssignValueColor(if value == 1 then Color.GREEN else Color.BLACK);
AssignBackgroundColor(if value == 1 then Color.GREEN else Color.BLACK);

 

[number9]

This revised code seems to work.

Thank you, works perfectly! I appreciate your time and efforts. Now I can apply this to my others Enjoy your weekend!