IFibonacciRetracements issue

[ct]

Scenario:

Was trying to move an existing Fibonacci Retracement drawing on a chart to a different time by changing StartTime and EndTime via IFibonacciRetracements interface.
// get the entry - it does this fine
IFibonacciRetracements fibRetracements = (IFibonacciRetracements)DrawObjects[draw.Tag];
// change the values
fibRetracements.StartTime = fibRetracements.StartTime.AddMinutes(-60);
fibRetracements.EndTime = fibRetracements.EndTime.AddMinutes(-60);

just doesn't work. The drawing disappears. When I changed only one value and it snapped to bar 0. It was originally drawn using time and not bars.

However if I use bars it works fine.
fibRetracements.StartBarsAgo = -100;
fibRetracements.EndBarsAgo = -100;

Is this an undocumented feature or a bug?

[NinjaTrader_JessicaP]

Hello ct, and thank you for your question.

I would like to clarify, since we are using IFibonacciRetracements, we are using NinjaTrader 7?

If this is the case, the StartTime and EndTime are not guaranted to maintain a relationship to StartBarsAgo and EndBarsAgo, respectively, beyond object creation. You will need to modify the BarsAgo properties to change how they are displayed. Modifying their times in tandem to how they are displayed or vice-versa is the responsibility of the programmer.

Please let us know if there are any other ways we can help.

[ct]

JessicaP

Yes it is on Ninja Trader 7. Your response perfectly explains the results I am experiencing. I modified my program to just redraw the Fib from scratch and it works fine. Thanks to your reply I will be able to avoid this issue in the future. You get a gold star from me.

I also appreciate the spam being removed.

Cheers.