Your indicator works with NinjaTrader 8 as well as TradingView. The rules are the same, so it marks the same setups, stops and targets as your preview. The Indicator plan covers both. NinjaTrader 8 runs on Windows, so you add it on a Windows computer.
Choose NinjaTrader
On Ready for TradingView, choose NinjaTrader at the top. You see Ready for NinjaTrader and No errors: your indicator has been checked for errors and matched to your preview, so it finds the same setups. Below that is Your settings in NinjaTrader: what you can change in the indicator's settings. If part of your indicator can't go on NinjaTrader, that part is named.

Rules on 15-second candles work too: NinjaTrader has second charts.
Download it
Choose Add it to NinjaTrader, then Download. If you haven't subscribed, Subscribe opens first, then brings you back. You get one file: Wildflower and your indicator's name with no spaces, ending .cs (for example, WildflowerMorningBounce.cs). It is yours to keep.

Put it in NinjaTrader
- On your computer, open Documents, then NinjaTrader 8, bin, Custom and Indicators, and put the file there.
- In NinjaTrader's Control Center, choose New, then NinjaScript Editor.
- In the list on the right, open Indicators and double-click your file. Press F5 to compile. If no errors are listed at the bottom of the editor, it worked.
- Open a chart using your indicator's candle size, right-click it and choose Indicators. Open the Wildflower folder, double-click your indicator, then choose OK.
Candles and times
Your indicator works on Minute and Second charts. On any other chart type it shows a message in the middle of the chart saying so.
NinjaTrader shows times in the time zone chosen in Tools, Options, General. Your indicator reads that setting itself and turns each candle's time into each market's own time, so sessions, opening ranges and the daily close stay right, including the weeks the clocks change. When your rules use a time of day, the box on your chart shows the time zone it read.
In the chart's Data Series window, use trading hours ending in ETH (the full session), so the chart has every candle, as your preview does.
Alerts
When a new setup's candle closes, it shows in NinjaTrader's Alerts window with a sound (New, then Alerts, opens it). Alert on each setup and Play a sound with each alert in the indicator's settings switch them. Setups already on the chart when it loads don't alert.
What it draws
- Arrows under each buy and over each sell.
- Entry, stop and target boxes and the lines from your rules, as in TradingView.
- A box in the top right corner with your indicator's name, how many setups it found and the last setup.
Marks are decided when each candle closes, so they never move afterwards.
Update it
Download it again from Add it to NinjaTrader and put the new file in the same Indicators folder, replacing the old one with the same name. Press F5 in the NinjaScript Editor, then on each chart that has it, right-click and choose Reload NinjaScript. Its settings stay.
Does it match?
Choose It's on my chart. The box in the top right corner of your NinjaTrader chart shows your indicator's name, how many setups it found and the last one. Then find the setups Wildflower lists on your chart. If the times differ by whole hours, NinjaTrader's time zone differs from the one your chart here uses.

NinjaTrader lists errors when it compiles

NinjaTrader compiles every indicator together, so one broken file stops them all. Check the Indicators folder has one copy of your file: a browser can save a second one ending (1).cs. Delete it and press F5 again. If the errors name a file that isn't ours, fix or remove that file.
It is not in the Indicators list
Compile it first: press F5 in the NinjaScript Editor. Then open Indicators on your chart again and look in the Wildflower folder.