Append simple arrays together while still keeping them as separate arrays

(0) Share

Report

Posted on by HI-18092034-0

How do I append a list of simple arrays together while still keeping them as separate arrays within a larger structure?

I need to compose a body of arrays in this format:

[

a1,

a2,

a3,

a4,...

[

b1,

b2,

b3,

b4,...

]

Each array is being generated within a for_each loop, so I wanted to use append to array variable, but I am getting the following error:

Categories:

Business Process Flows

Capture.png

I have the same question (0)

All responses (3)

Answers (0)

eliotcole 4,280 Moderator on at

Like (0)

Report
Append simple arrays together while still keeping them as separate arrays

Hi, @HI-18092034-0, could you please try the below, instead?

Do NOT Concur - Change the 'For each' loop to run with no concurrency:

Go to the settings and ensure that concurrency is on

Set it to: 1

Set Not Append - Inside your for each loop, perform the following actions:

Data Prep - Before your current 'Append to array variable' add an action called 'DataPrepCNST' or something ... (use Compose or Parse JSON - I prefer the latter with '{}' in the schema) and inside that simple place an expression that consists of a single union() function. The two parts of the union() will be below ... if you need to union more, just layer them up:

Each of the arrays you've made

The current value of whatever your array variable is called

Delete Append Action - 😲 ... yep ... remove it

Set Variable - Now place a 'Set variable' action in place of it and ensure that it uses the value from your Data Prep action above!

If you're worried about any of this, save a copy of your flow before trying it.

Don't copy my example crap verbatim, either, matey ... make things your own. :-)

Also ... try a few variations on the above ... you might find a better way! :-)

---

I have a more complex response to this, but ... I don't think it is worth going through.

---

Also ... if you would like more help, then, could you please edit your original question by pasting an image so that it is visible on our screens without having to download it of the actions which create the for each loop?

It might aide us in understanding more what is happening, here.

Was this reply helpful? Yes No
HI-18092034-0 2 on at

Like (0)

Report

Append simple arrays together while still keeping them as separate arrays

@Chriddle The problem is that each simple array is being generated within a for_each loop:

I am not able to simply place the output within a compose that is outside of the loop. Any suggestions?

Was this reply helpful? Yes No
Chriddle 8,112 Super User 2025 Season 2 on at

Like (0)

Report
Append simple arrays together while still keeping them as separate arrays

Simply place the array in a Compose within the loop and call that Compose after the loop.
This will return an array of all Compose values during the loop.

Compose 4:

outputs('Compose_3')

Output

Was this reply helpful? Yes No