Creating a "crossover" on changing background color possible?

[MickeyHR]

Is the following possible:

I have defined a set of criterias by which the background color of a chart changes from green while in uptrend to red during downtrend and finally stays white during untrending.

The change of a the color resembles a crossover of moving averages or such but is -rather than the simple crossing- based on a set of multiple criterias.

Is there any method I could use to call the moment of change of color like a crossing with a lookback period and have it spitting out a numeric value or graphical symbols if a secondary set set of criterias during the lookback period gets fullfilled

Here is an example:
1) TrendDirection is defined at the beginning of the script:

enum TrendDirection
		{
			Up,
			Down,
			Ranging, 	
		}

2) Further down the script I use it to set the backround color conditionally:

 
if
                           (
				LinReg(20)[0]>= SMA(20)[0]	 
				&& 
				[COLOR="Red"]background[1][/COLOR]=TrendDirection.Down
				&&
				Low[0]<LinReg(20)[0]
		            )
                                       {			
							DrawArrowUp("arrow"+CurrentBar, true, 0, low-atr*1, Color.Green);
							background=TrendDirection.Up;
							
					}

If I try using above kind of code as a method of trying to refer to the previous day [1] status of the background I get the error
Cannot apply indexing with [] to an expression of type 'NinjaTrader.Indicator.MyIndicatorName.TrendDirect ion'

So... Any way around you know of?

Any assistance is well appreciated and I thank you for your attention already in advance

[NinjaTrader_Lance]

Hello,
You could use a DataSeries to track the state of a bar.

Here is an example: http://www.ninjatrader.com/support/f...ead.php?t=7299

This would allow you to store the trend state and access it by giving a bars ago index

Let me know if I can be of further assistance.