# Calculated Field - Data Directive BPM?

**Category:** [Epicor ERP 10](https://www.epiusers.help/c/e10/5)
**Created:** 2016-12-29 21:14 UTC
**Views:** 1513
**Replies:** 2
**URL:** https://www.epiusers.help/t/calculated-field-data-directive-bpm/36739

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## Post #1 by @Mike

I am looking for the easiest way to make a calculated field which is the sum of two extended UD fields. The two extended UD fields will be entered on QuoteDtl via Quote Entry. I need the field in the database, can't just sum in SSRS. 

I tried an in-transaction data directive to set the field, but for some reason I can't reference the UD fields in the expression.  Would prefer a solution which doesn't involve using custom code. 

Seems like it should be an easy task, am I missing something?

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## Post #2 by @josecgomez

Why can't you use a Data Directive? You can reference the fields like so

<img src="/uploads/default/original/1X/889a51adb8f8404d7c73709f9b709e018904deb3.png" width="331" height="266">

<img src="/uploads/default/original/1X/1a115e24597e524920a15e5d07ae712eb2d6e76a.png" width="690" height="175">

<img src="/uploads/default/original/1X/38e9d9ebcb3b135fd0613dcb1599464854aff77a.png" width="690" height="469">

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## Post #3 by @Mike

Ah, I was trying to just click on the UD fields like the system fields instead of referencing them like you are. 

I do get the following error when I click validate for the BPM. But it still works when I tested it. Any issue with that?

Thanks much for the help!

<img src="/uploads/default/original/1X/8720a52ac1374c6e3783f54eda6e9835cdcabbaa.png" width="439" height="134">

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**Canonical:** https://www.epiusers.help/t/calculated-field-data-directive-bpm/36739
**Original content:** https://www.epiusers.help/t/calculated-field-data-directive-bpm/36739