# Why can't I use two CD4 concepts in the Simple Lab Entry module?

**URL:** https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829
**Category:** Ask OpenMRS
**Created:** [August 20, 2015, 7:18am UTC](https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829 "2015-08-20T07:18:16Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![rnufable](https://talk.openmrs.org/letter_avatar/rnufable/32/5_5575768a8748004e209b776fc1b2916d.png) [@rnufable](https://talk.openmrs.org/u/rnufable)
#### Post date: [August 20, 2015, 7:18am UTC](https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829/1 "2015-08-20T07:18:16Z")

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**Platform Version:** 1.9.8

**Question:** Hello all, i simple lab entry module, i cant seem to enter results if I use 2 concept ID’s, is there something wrong here in my configuration \* see image \*

 ![](https://talk.openmrs.org/uploads/default/original/2X/9/965663543c97ae58d3ac9857a0d7571b423df1db.png)

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### Author: ![rnufable](https://talk.openmrs.org/letter_avatar/rnufable/32/5_5575768a8748004e209b776fc1b2916d.png) [@rnufable](https://talk.openmrs.org/u/rnufable)
#### Post date: [August 24, 2015, 4:06am UTC](https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829/2 "2015-08-24T04:06:31Z")

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hello, is there something wrong here? i keep getting a blank window with an ok button whenever I try to save a lab entry using this configuration

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### Author: ![mseaton](https://talk.openmrs.org/user_avatar/talk.openmrs.org/mseaton/32/8088_2.png) [@mseaton](https://talk.openmrs.org/u/mseaton)
#### Post date: [August 24, 2015, 8:00pm UTC](https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829/3 "2015-08-24T20:00:34Z")

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cd4ConceptId only supports a single concept representing CD4 Count.

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### Author: ![michael](https://talk.openmrs.org/user_avatar/talk.openmrs.org/michael/32/15070_2.png) [@michael](https://talk.openmrs.org/u/michael)
#### Post date: [August 25, 2015, 7:01pm UTC](https://talk.openmrs.org/t/why-cant-i-use-two-cd4-concepts-in-the-simple-lab-entry-module/2829/4 "2015-08-25T19:01:28Z")

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2 posts were split to a new topic: [Why can’t I save an entry in Simple Lab Entry module?](https://talk.openmrs.org/t/why-cant-i-save-an-entry-in-simple-lab-entry-module/2875)