# Operations in Design Reports

**URL:** <https://forum.inductiveautomation.com/t/operations-in-design-reports/80145>\
**Category:** Ignition\
**Tags:** reporting, ignition81\
**Created:** [October 6, 2023, 2:48pm UTC](https://forum.inductiveautomation.com/t/operations-in-design-reports/80145 "2023-10-06T14:48:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Miguel\_Gomez](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@Miguel\_Gomez](https://forum.inductiveautomation.com/u/Miguel_Gomez)\
**Post date:** [October 6, 2023, 2:48pm UTC](https://forum.inductiveautomation.com/t/operations-in-design-reports/80145/1 "2023-10-06T14:48:04Z")

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Hello,

Hope everything ok in your lives.

I got a question is it possible to do basic operations with the values in design reporting?

For example:

Total Gallons: @Top.total.volume@+@Bottom.total.volume@ I did it in this way and the result was

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/e/8e9b5356b67af9ec44deaaefaafa7f1b28cb5e8a.png)

So obviously this is not working.

The data is collected by named querys

Thank you!

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**Author:** ![Felipe\_CRM](https://avatars.discourse-cdn.com/v4/letter/f/dfb087/32.png) [@Felipe\_CRM](https://forum.inductiveautomation.com/u/Felipe_CRM)\
**Post date:** [October 6, 2023, 2:50pm UTC](https://forum.inductiveautomation.com/t/operations-in-design-reports/80145/2 "2023-10-06T14:50:21Z")

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Please see some of the examples here:

[https://docs.inductiveautomation.com/display/DOC81/Keychain+Expressions](https://docs.inductiveautomation.com/display/DOC81/Keychain+Expressions)

Your expression should be inside one single pair of `@@` to evaluate as an expression.

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<div class="post-metadata">

**Author:** ![Miguel\_Gomez](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@Miguel\_Gomez](https://forum.inductiveautomation.com/u/Miguel_Gomez)\
**Post date:** [October 6, 2023, 2:54pm UTC](https://forum.inductiveautomation.com/t/operations-in-design-reports/80145/3 "2023-10-06T14:54:05Z")

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Thank you!

I searched online but I didn't find that webpage.

Really appreciate your help.