# Saving and accessing bi-dimensional variables

**URL:** <https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304>\
**Category:** General\
**Created:** [3 February 2021 12:05 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304 "2021-02-03T12:05:07Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![fmarzocca](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/fmarzocca/32/35901_2.png) [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Post date:** [3 February 2021 12:05 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/1 "2021-02-03T12:05:08Z")

</div>

Hi,

my flows should make use of several variables with this format:

var1 = "0615", "value1"  
var2 = "875", "value2"  
var3 = "745", "value3"  
...

I am trying to set/get the variables, but I got lost....  
Thanks for any help.

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 February 2021 13:23 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/2 "2021-02-03T13:23:29Z")

</div>

Is 0615 in some way the value of value1?  
Also what are you going to do with them?

---

<div class="post-metadata">

**Author:** ![ghayne](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ghayne/32/39_2.png) [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Post date:** [3 February 2021 13:41 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/3 "2021-02-03T13:41:43Z")

</div>

Variables can also be arrays!

---

<div class="post-metadata">

**Author:** ![fmarzocca](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/fmarzocca/32/35901_2.png) [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Post date:** [3 February 2021 14:14 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/4 "2021-02-03T14:14:09Z")

</div>

no. 0615 is the ID.

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 February 2021 15:07 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/5 "2021-02-03T15:07:23Z")

</div>

> [@fmarzocca](#):
>
> 0615 is the ID.

So is "value1" a value (number?) representing something about device(?) 0615? and "value2" is the same thing but for device 875?

---

<div class="post-metadata">

**Author:** ![fmarzocca](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/fmarzocca/32/35901_2.png) [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Post date:** [3 February 2021 15:54 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/6 "2021-02-03T15:54:07Z")

</div>

Correct

- Sent from my mobile phone. Sorry for typos -

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [3 February 2021 16:01 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/7 "2021-02-03T16:01:08Z")

</div>

OK, in that case one solution may be to store the data in objects of the form  
`{id: "0615, value: 7}`  
or perhaps  
`{id: "0615, temperature: 73}`  
or  
`{id: "0615, operator: "fred"}`  
Perhaps you need an array of those, one for each device. It depends what you want to do with the data.

---

<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:** [4 April 2021 16:02 UTC](https://discourse.nodered.org/t/saving-and-accessing-bi-dimensional-variables/40304/8 "2021-04-04T16:02:08Z")

</div>

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.