Does anyone know how to map the precious close of a custom indicator onto the next session? I attempted a counting loop and that didn't give me what I needed. I tried to modifiy the existing study changing the locations of close(period = aggregationPeriod)[-1]) to my variable x, but it appears that TOS doesn't accept aggregation periods for a variable. I tried counting from open but that didn't work either. I also tried to store the last barnumber but TOS does not use sequential numbering.
Can someone help? thanks All I am trying to do is color the current days x indicator value on whether the indicator is above or below yesterday's x closing value

input Period = AggregationPeriod.DAY;
def YestClose = ;

X.assignValueColor(if X >= YestClose then color.green else color.red);


Something like that?

So I tried that and while it works on main charts is doesn't seem to work on lower charts with variable..

For example say, I have a lower study that tracks the /DX against /ES..

declare lower;
input aggregationPeriod = AggregationPeriod.DAY;
input showOnlyLastPeriod = no;

def x=if GetSymbol()==/ES then close("/DX") else double.nan;

#this line I use to this trigger the location of the close
def ValueClose=if (showOnlyLastPeriod and !IsNaN(close(period = aggregationPeriod)[-1])) then
double.NAN
else
#what do I put since I want to use the previous close value of x instead of actually
?
close("/DX",period = aggregationPeriod)[1]


what I would like to is color the x based on the previous close valce of x.

Okay, so, not to be rude, but this all seems unnecessarily complicated.
Let me try to understand what you're intentions are here.....

You're trying to do what exactly? Compare the current price of /DX versus yesterday's close?
And then plot that as a lower study on an /ES chart?