# Need Help: What is the Parameter "Size" in QR code generator column?
**URL:** https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679
**Category:** Ask for Help
**Created:** [December 18, 2024, 3:44pm UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679 "2024-12-18T15:44:47Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@Dilip\_Adiga](https://community.glideapps.com/u/Dilip_Adiga)
#### Post date: [December 18, 2024, 3:44pm UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/1 "2024-12-18T15:44:48Z")
Hi Guys,
I have to generate QR code for every row which should contain the Amount to be paid which is in Math column.
When I enter it in content It does not give me any QR code.
Also what is this Parameter called Size? what should I input there?
here is my config screenshot
Can someone help me out here?
Thank you in advance for your help.
Regards,
Dilip
---
### Author:  [@Jakub\_Molak](https://community.glideapps.com/u/Jakub_Molak)
#### Post date: [December 18, 2024, 4:36pm UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/2 "2024-12-18T16:36:42Z")
Hey there,
I’m pretty sure you cannot generate a QR code from the result of a math column unfortunately,
the Size parameter just refers to the height and width in pixels you want the QR code to be.
---
### Author:  [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh)
#### Post date: [December 18, 2024, 11:37pm UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/3 "2024-12-18T23:37:01Z")
Same question as Jakub, why do you need the amount to be the underlying value of the QR code?
---
### Author:  [@Dilip\_Adiga](https://community.glideapps.com/u/Dilip_Adiga)
#### Post date: [December 19, 2024, 12:45am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/4 "2024-12-19T00:45:53Z")
Hi @Jakub_Molak , @ThinhDinh ,
Thank you for replying.
Basically I have user app (End User) and Restaurant (Waiter app)
When user completes his purchase or eating at restaurant he gets the bill and he has to upload the bill amount and bill picture on our platform to avail discounts / redeem points.
People might scam us by uploading random bills so I was thinking if the waiter can give an authenticating QR code from his app after the user enters the amount and scans the QR code then it will authenticate it as correct transaction and user can avail benefit.
Now I am not sure how to make this authentication mechnism to work as it should reduce the points and mark transaction as valid.
Can you guys give some suggestions?
Thank you in advance.
Regards,
Dilip
---
### Author:  [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh)
#### Post date: [December 19, 2024, 1:01am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/5 "2024-12-19T01:01:01Z")
Why don’t you just record the bill on the waiter side/admin side? Then just link it to the user by an email/phone number/anything that is unique?
---
### Author:  [@Dilip\_Adiga](https://community.glideapps.com/u/Dilip_Adiga)
#### Post date: [December 19, 2024, 1:18am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/6 "2024-12-19T01:18:58Z")
Hi Thinh,
I got your idea but here is the issue.
In India multiple restaurants or business use multiple
POS or billing software’s which they don’t give me access to. When a bill is generated the bill is generated outside of my system
So essentially when user inputs the bill amount and bill picture that is the first time it’s coming to my system
So problem is users might just scam me to gain points by entering random bill and amount
That’s why I was thinking the QR code approach but wondering how can I solve this.
Regards,
Dilip
---
### Author:  [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh)
#### Post date: [December 19, 2024, 1:21am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/7 "2024-12-19T01:21:17Z")
I think it’s just them making this harder than it should be. Not sure why they’re not sending access to you if they have trusted you to make an app for them?
---
### Author:  [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)
#### Post date: [December 19, 2024, 1:29am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/8 "2024-12-19T01:29:50Z")
Put you math column into a template column and use that to build the QR code.
---
### Author:  [@Dilip\_Adiga](https://community.glideapps.com/u/Dilip_Adiga)
#### Post date: [December 19, 2024, 1:33am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/9 "2024-12-19T01:33:29Z")
Hi ThinhDinh,
Oh I get your point. Thing is we are not billing software providers for them
We are just ones who give them discounts , we are a separate discount platform
They have billing software provided by someone else
We just want to authenticate discounts that come through our platform.
Hope this gives better clarity
Regards,
Dilip
---
### Author:  [@Dilip\_Adiga](https://community.glideapps.com/u/Dilip_Adiga)
#### Post date: [December 19, 2024, 1:41am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/10 "2024-12-19T01:41:48Z")
Hi Jeff,
Thank you for suggesting. I am
Able to get the value in QR code now.
Just a question, can I on reading of QR code trigger an action like reduce points available ?
Is the allowed ?
Thank you in advance for your help
Regards,
Dilip
---
### Author:  [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)
#### Post date: [December 19, 2024, 2:32am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/11 "2024-12-19T02:32:44Z")
> **[Scan Barcode or QR Code | Glide Docs](https://www.glideapps.com/docs/automation/actions/scan-barcode-qr-code)**
>
> Scan barcodes or QR codes and log the values to your table.
---
### Author:  [@system](https://community.glideapps.com/u/system)
#### Post date: [December 26, 2024, 2:33am UTC](https://community.glideapps.com/t/need-help-what-is-the-parameter-size-in-qr-code-generator-column/78679/12 "2024-12-26T02:33:26Z")
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.