# Report Designer - Footer Calculations

**URL:** <https://forum.inductiveautomation.com/t/report-designer-footer-calculations/3442>\
**Category:** Ignition\
**Created:** [October 16, 2011, 3:11pm UTC](https://forum.inductiveautomation.com/t/report-designer-footer-calculations/3442 "2011-10-16T15:11:20Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![rfbuehler](https://avatars.discourse-cdn.com/v4/letter/r/3ec8ea/32.png) [@rfbuehler](https://forum.inductiveautomation.com/u/rfbuehler)\
**Post date:** [October 16, 2011, 3:11pm UTC](https://forum.inductiveautomation.com/t/report-designer-footer-calculations/3442/1 "2011-10-16T15:11:20Z")

</div>

I have a report that has the MIN and MAX values reported in the table.

These values appear in the footer OK.

What I need is to calculate the difference between the MIN and the MAX and display the value also.

How do I enter a formula in the footer.

Thanks.

My cell in the footer contains the following

@min.U1\_mw\_hr\_mtr@  
@max.U1\_mw\_hr\_mtr@

---

<div class="post-metadata">

**Author:** ![nathan](https://avatars.discourse-cdn.com/v4/letter/n/c5a1d2/32.png) [@nathan](https://forum.inductiveautomation.com/u/nathan)\
**Post date:** [October 16, 2011, 5:02pm UTC](https://forum.inductiveautomation.com/t/report-designer-footer-calculations/3442/2 "2011-10-16T17:02:03Z")

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```auto
@max.U1_mw_hr_mtr - min.U1_mw_hr_mtr@
```

You can add expressions within the @ characters. That’s also how you do functions (including the running totals).