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How do I fix OnBarUpdate Error?

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    How do I fix OnBarUpdate Error?

    I am running a muti time frame strategy with 20 Range and the secondary time frame and 2 Range as primary. Every time I start the strategy I get an error that says I am accessing an index with a value that is invalid... Please show me a way to fix this. Thank you

    #2
    Hello relogical,

    Thanks for your post.

    In an MTF environment it is easy to miss an index reference. Without specific error messages or code to review, the best advise I can provide is to review the tips we have in the guide for multi-time frame: http://www.ninjatrader.com/support/h...nstruments.htm The guide provides specific requirements for MTF scripting consideration of the various indexes.

    Please let me know if I can be of further assistance.
    Paul H.NinjaTrader Customer Service

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      #3
      Originally posted by relogical View Post
      I am running a muti time frame strategy with 20 Range and the secondary time frame and 2 Range as primary. Every time I start the strategy I get an error that says I am accessing an index with a value that is invalid... Please show me a way to fix this. Thank you
      Make a check for CurrentBars, and return if said check is not satisfied.

      Comment


        #4
        Originally posted by relogical View Post
        I am running a muti time frame strategy with 20 Range and the secondary time frame and 2 Range as primary. Every time I start the strategy I get an error that says I am accessing an index with a value that is invalid... Please show me a way to fix this. Thank you
        In OnBarUpdate(), please include the following statements at the very first lines:

        if (CurrentBars[0] < X) return; // ensure your primary series has enough bars
        if (CurrentBars[1] < Y) return; // ensure your secondary series has enough bars
        Your assignment is to determine X and Y, based on your specific indicator programming.

        Thanks.
        Pi
        ninZa
        NinjaTrader Ecosystem Vendor - Ninza

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