# BarUpDn time limited

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trying to understand strategies, it appears that there is a lot of black magic in how a strat works behind the scenes.
anyway, it's hard to analyse what's all the data with one gazillion entries, and i wanted to know how we can manipulate/do stuff with a chart.

so, i needed to know how to "give" the script my values to work on. bundled two wants/needs into one, and created a script that only applies a strategy from the date given onwards.

how to use:
at the chart, go to the "format" little button, then the input tab, and there is all the date fields i created. fun to set it to the current date, then start going backwards and see all the little arrows filing up the chart :)
```//@version=2
strategy("BarUpDn time limited", overlay=true, default_qty_type = strategy.percent_of_equity, default_qty_value = 10)

//input boxes for the limit date
yearLimit = input(2016,title="year")
monthLimit = input(1, title="month")
dayLimit = input(1, title="day")

//function that checks if the current date is more recent than the limit
dateOk(yl,ml,dl) =>
ok = (year < yl) ? false : (yl == year and month < ml ) ? false : (yl == year and ml == month and dayofmonth < dl) ? false : true
ok

//applies dumb prebuilt strat limited to the date
if (dateOk(yearLimit,monthLimit,dayLimit) and (close > open and open > close[1]) )
strategy.entry("BarDn", strategy.short)
if (dateOk(yearLimit,monthLimit,dayLimit) and (close < open and open < close[1]) )
strategy.entry("BarUp", strategy.long)
```

How exactly does this strategy make an entry decision? Is it based on gapping? Because surely the open should be equal to the previous candles close price?
DomHall
@DomHall, not important, i was just fooling with strategy syntax, got one of the builtin examples, and the conditions prety much make no sense. you could try close > close, just to make the strat fire. as it says in the comments //applies dumb prebuilt strat limited to the date

the point was to make a strategy start from the date i choose, not from the first bar. but then again, this thing has 60% correct hits, and it's turning a profit, so it lloks like i done a "killer strat" just by pure chance :D
deimosaffair
Okay, cool. The other way to do it is to write:

is_date_valid = time > timestamp(2016, 09 , 11, 0, 1)
if is_date_valid and (close > open and open > close) )
strategy.entry("BarUp", strategy.long)

Just another way that someone taught me. It's annoying that the strategy tester maxes out at 2000!