# How to 'reference cells' in Report Table?

**URL:** <https://forum.inductiveautomation.com/t/how-to-reference-cells-in-report-table/23854>\
**Category:** Ignition\
**Created:** [April 4, 2019, 3:29pm UTC](https://forum.inductiveautomation.com/t/how-to-reference-cells-in-report-table/23854 "2019-04-04T15:29:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tbdaigle](https://avatars.discourse-cdn.com/v4/letter/t/5fc32e/32.png) [@tbdaigle](https://forum.inductiveautomation.com/u/tbdaigle)\
**Post date:** [April 4, 2019, 3:29pm UTC](https://forum.inductiveautomation.com/t/how-to-reference-cells-in-report-table/23854/1 "2019-04-04T15:29:32Z")

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What would be the suggested method for performing arithmetic on two values that are in different rows and, perhaps, columns of a table in the Reporting Module?

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 4, 2019, 3:31pm UTC](https://forum.inductiveautomation.com/t/how-to-reference-cells-in-report-table/23854/2 "2019-04-04T15:31:49Z")

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Peruse [https://docs.inductiveautomation.com/display/DOC79/Keychain+Expressions](https://docs.inductiveautomation.com/display/DOC79/Keychain+Expressions), followed by [http://www.reportmill.com/support/keychains.pdf](http://www.reportmill.com/support/keychains.pdf)  
Such things are technically possible, but not a lot of fun to implement.

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**Author:** ![KathyApplebaum](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kathyapplebaum/32/7261_2.png) [@KathyApplebaum](https://forum.inductiveautomation.com/u/KathyApplebaum)\
**Post date:** [April 4, 2019, 4:16pm UTC](https://forum.inductiveautomation.com/t/how-to-reference-cells-in-report-table/23854/3 "2019-04-04T16:16:05Z")

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The script data source can also be useful for doing math on another data source: [https://docs.inductiveautomation.com/display/DOC79/Scripting+Data+Source](https://docs.inductiveautomation.com/display/DOC79/Scripting+Data+Source)