Barcode reader and syntax First(variable).Value

Like (2) Share

Report

Posted on 21 Feb 2025 07:16:58 by RB-21020710-0

Hi, everybody,

please help me. I am creating an application in Power Apps. I have a barcode scanner and below that a text input field (TextInput). Until yesterday, everything worked fine. I scanned a QR code with the reader and it showed up in the text box. Today, when I continue to develop, the application writes me an error. It looks like the variables have stopped working. Has anyone solved a similar problem?

Barcode reader -> OnScan:
Set(varQR,BarcodeReader1.Barcodes);
Set(varQrCode,First(varQR).Value)

TextInput -> Default:
varQRCode (the First(Barcodereader1.barcodes).Value syntax does not work either)

Isn't this some issue in Microsoft or something?

Thank you for your help!

Categories:

General Questions

All responses (5)

Answers (1)

Verified answer

SpongYe 5,580 Super User 2025 Season 1 on 21 Feb 2025 at 10:35:39

Like (2)

Report

Barcode reader and syntax First(variable).Value

Hi all,

I found a workaround in one of the posts mentioned below:

To resolve this I just had to change the version of power apps to : 3.25021.9
I think all the version like 3.25022.8 or upper have the same issue.

If you have the same just change manually the version here :

There have been a lot of topics lately:

Update 2.53.180.25037 broke ZIP

Barcode Reader

Barcode Scanner Error - Name isn't valid. "Value" isn't recognised

Power Apps Can't Scan Barcode

Barcode Reader
Zizlik 43 on 21 Feb 2025 at 10:12:35

Like (0)

Report

Barcode reader and syntax First(variable).Value

I can confirm, I switched the application to Authoring version: 3.25021.9 and everything is running smoothly

(I tried the newer version 3.25023.2 but BarcodeReader1.Barcodes doesn't work there either.)

version.png
RB-21020710-0 5 on 21 Feb 2025 at 09:33:55

Like (1)

Report

Barcode reader and syntax First(variable).Value

I found that the application in version: 3.25022.8 is not working.

The application works in version: 3.25021.9

So it is possible to revert to an older version in the settings.
RB-21020710-0 5 on 21 Feb 2025 at 09:14:11

Like (0)

Report

Barcode reader

@Zizlik
Hi,
Yeah, I have the same problem as you. Everything works on the older released version, but I have a development error in make.powwerapps.com.

Looks like some syntax problem with First(variable).Value.
Zizlik 43 on 21 Feb 2025 at 09:00:10

Like (1)

Report

Barcode reader

Hi everybody,

I've been having the exact same problem... I've had a working app for a few months now, and it just started crashing a few days ago

UpdateContext({scannedValue: First(BarcodeReader1.Barcodes).Value})

BarcodeReader1.Barcodes = Error. (JSON parsing error, expected 'object' but got 'array'.)

But strangely, the published application still works, but I see errors in https://make.powerapps.com/ (so I can't publish a new version)

The function 'First' has some invalid arguments.
BarcodeReader1
.OnScan

Invalid argument type (Record). Expecting a Table value instead.
BarcodeReader1
.OnScan

Name isn't valid. 'Value' isn't recognized.
BarcodeReader1
.OnScan