Retrieving the symbol name within the script

[buylosellhi]

Hi,

I'm trying to write a script where I need to add a secondary chart within the script with the same symbol as the primary chart that I'm adding the custom script on.

I'm currently calling the symbol name using Instrument.Fullname but when i change the symbol on the chart from the drop down menu the indicator doesnt work.

I'd really appreciate any help with this.

[NinjaTrader_RyanM1]

Hello buylosellhi,

I'm trying to write a script where I need to add a secondary chart within the script with the same symbol as the primary chart that I'm adding the custom script on.

For this you can use the Add() overload that doesn't require an instrument specified. The secondary series is then always the same instrument as the primary.

Add(PeriodType.Minute, 15);

http://www.ninjatrader.com/support/helpGuides/nt7/multi_time_frame__instruments.htm

[buylosellhi]

Hi Ryan,

I'm using the AddRenko() function. Does that work without the instrument name as well ?

thanks again

[NinjaTrader_Bertrand]

Unfortunately an instrument has to be specified for the AddRenko() method - are you getting any errors when the script is not working anymore for you? Does it depend on how you change the primary input series or is change here generally throwing it off?

Thanks,

[buylosellhi]

now the indicator just stopped working. i tried creating a new one from scratch and there is no output

[NinjaTrader_Bertrand]

Can you share the indicator you attempted running so we can look into it? If you check the Control Center's log tab - any errors listed there?

[buylosellhi]

Bertrand, thanks for your msg.
i sent the indicator to ninja support group email.

[buylosellhi]

here is the error I'm getting in the log. this indicator was working fine yesterday
"Error on calling 'OnBarUpdate' method for indicator 'test' on bar 0: You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart."

[NinjaTrader_Bertrand]

Thanks - this normally means you're not having a proper CurrentBars check for all series defined, such as

if (CurrentBars[0] < 0 || CurrentBars[1] < 0 ....) return;

This would be put at your OnBarUpdate() start to ensure only valid bars are accessed.

[buylosellhi]

that did it ! thanks much
i'm surprised why it was working yesterday and not today...

thanks again