Allows you to work with complex Json objects from your event sheet

Example Files

JsonAddOnTest.c3p (162 KB)

This example demonstrates all of the major functionality available and how to use it. It is well commented and should serve as a good resource for different use cases.

Version History

Version Size Downloads Released
1.2.0 (Current)
17 KB 17 Download
15 KB 77 Download



1.2.0 Stable (17 KB)


  • License MIT License
  • Copyright Robert Greenberg. All rights reserved.


  • Download count 153 total downloads
  • Latest download count 17 downloads of latest version
  • Average download count 2 downloads per day average




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  • Great job rhg - it's nice to have a fully featured JSON plugin for the C3 runtime!

    • [-] [+]
    • 1 points
    • (2 children)
    • it is my mistake , i found the mistake.

    • I will take a look at it. But looking at your example the first things that strikes me is getting a dictionary works by pointing at simple javascript object with properties, not an array. So in that case the query to use with the GetDictionaryFromJsonPath would be something like slot.friendlist[0]. I will look at this to make sure though


      Just tried it with your example and it works fine by loading a dictionary with the following:

      JsonManager.GetDictionaryFromJsonPath("world", "friendlist[0]", "No")

      You could also do something like:

      JsonManager.GetDictionaryFromJsonPath("world", "friendlist[" & str(JsonManager.GetJsonArrayLength("world", "friendlist", "No")-1) &"]", "No")

  • Could you add a condition that tests for when the loop has completed. I.e. its true *after* the last loop item has been processed.

    This would be ideal to trigger post-loop action, such as selecting an element in a listbox, that was filled with the the loop

    thank you,


    • You could just put a condition after the loop that will run as soon as the loop is done. I don't know if you really need an event for this.

      Also for commas in a string I would start1 with an empty string. Then when you try to append to it check if its empty. If its empty just add the string. If it's not empty add a comma first and then the string. Then you never have to worry about having too many commas

    • btw, sometimes its useful to also have a condition that tests true for when the last loop item processes, or even also the one before the last one. This helps customize construction tasks such a creation of json strings, where for last elements one does not add commas anymore.

  • It would be great if there could be additional dictionary like functionality, to construct a json, which can then be obtained via a toJson method.

    In my app, i need to update values in a google sheet. This means constructing an update json string as data for a ajax put call.

    now, the only way to do it is to build the string using concats

  • Hi,

    Was wondering if you got the link and were able to donwload it.

    thank you,


  • To bad, that JSON manager doesn't load from a variable -- such as after receiving JSON via an Ajax call response.

    • It loads the json file through ajax itself internally. The example project shows how that works. Since it handles the ajax call behind the scenes, I didn't think it would be necessary to load it from a string. I can certainly look at adding that functionality if you feel it's really needed and can't be met using the functions in the plugin to load itself with the data.

      • Hi, just to clarify -- after reading the documentation.

        I noticed one could load json via a URL -- but, my use case is different ... i am obtaining a json response string after an ajax call (to google sheets) -- so its dynamically generated after the call. I can the access it via ajax.lastData.

        It would be great if i could load ajax.lastData into the jason manager.

        Load more comments (1 replies)
      • Hi,

        Thank you for your reply.

        I was trying all morning to figure out how to access a json structure i received from google sheets (just posted a question in the forum).

        I wasn't able to figure it out so far.

        I think if you can support an ajax call via an ajax string and then auto-magically have the respond available that would be great.

        Alternatively, i think reading in json from a string would make the plugin more flexible ...

        thank you,


        Load more comments (12 replies)
  • thanks, pretty much needed :)