# No payload returned

**URL:** <https://discourse.nodered.org/t/no-payload-returned/58680>\
**Category:** General\
**Created:** [20 February 2022 09:13 UTC](https://discourse.nodered.org/t/no-payload-returned/58680 "2022-02-20T09:13:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![podi62](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@podi62](https://discourse.nodered.org/u/podi62)\
**Post date:** [20 February 2022 09:13 UTC](https://discourse.nodered.org/t/no-payload-returned/58680/1 "2022-02-20T09:13:07Z")

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I'm trying to create a histogram like structure using the function below but can't get ti return any payload. Any ideas?

```auto
var Hy64={};
var arr[];
for (j=1;j<129; j+=2) {
     Hy64.labels[j]=j; Hy64.labels[j+1]=j;
     arr[j]=j-1;arr[j+1]=j;
}
Hy64.data[0]=arr;
Hy64.series = ['SINGLE'];
return {payload:Hy64};

```

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<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [20 February 2022 09:28 UTC](https://discourse.nodered.org/t/no-payload-returned/58680/2 "2022-02-20T09:28:51Z")

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`var arr[]`is a syntax error `var arr = []`

in your loop you are trying to add elements to data and labels, but neither have been defined.  
`var Hy64={labels:[],data:[]};`

The loop starts at 1 and will produce element 0 as undefined.

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<div class="post-metadata">

**Author:** ![podi62](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@podi62](https://discourse.nodered.org/u/podi62)\
**Post date:** [20 February 2022 11:20 UTC](https://discourse.nodered.org/t/no-payload-returned/58680/3 "2022-02-20T11:20:25Z")

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> [@podi62](#):
>
> ```auto
> var Hy64={};
> 
> ```

Thank you so much. That solved my issue. 🙂

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [21 April 2022 11:20 UTC](https://discourse.nodered.org/t/no-payload-returned/58680/4 "2022-04-21T11:20:30Z")

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