# ExtractVariables not shown in trace

**URL:** <https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276>\
**Category:** Apigee\
**Tags:** api-runtime\
**Created:** [September 26, 2014, 11:08am UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276 "2014-09-26T11:08:49Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![anonymous8](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@anonymous8](https://discuss.google.dev/u/anonymous8)\
**Post date:** [September 26, 2014, 11:08am UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/1 "2014-09-26T11:08:49Z")

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Hello, In my flow i have a Service callOut followed by a n ExtractVaribale and an assignData The service callOut response is a JSON I use ExtractVariable for getting some data from this JSON and use it in the Assign When I debug Only the callOut and the Assign appears. More over the variables are not set. Someone suggests me to undeploy and redeploy it but it doesnt change anything. Thanks for answers.

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**Author:** ![anonymous8](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@anonymous8](https://discuss.google.dev/u/anonymous8)\
**Post date:** [October 2, 2014, 6:38pm UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/2 "2014-10-02T18:38:53Z")

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This may be an Apigee bug. Can you download your proxy and send it to [help@apigee.com](mailto:help@apigee.com)? I’ll take it from there and forward to someone who can examine it.

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**Author:** ![anonymous8](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@anonymous8](https://discuss.google.dev/u/anonymous8)\
**Post date:** [October 3, 2014, 1:09am UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/3 "2014-10-03T01:09:54Z")

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Jean-Baptiste, I’ve seen this happening when **VariablePrefix** is set. If you remove this element, you should be able to see them in the trace tool.

```auto
<ExtractVariables name="ExtractVariables-1">
   <DisplayName>Extract a portion of the url path</DisplayName>
   <URIPath>
      <Pattern ignoreCase="true">/accounts/{id}</Pattern>
   </URIPath>
   <VariablePrefix>urirequest</VariablePrefix>
   <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
</ExtractVariables>

```

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<div class="post-metadata">

**Author:** ![anonymous8](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@anonymous8](https://discuss.google.dev/u/anonymous8)\
**Post date:** [August 27, 2016, 5:56am UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/4 "2016-08-27T05:56:36Z")

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I still see this issue exists. Has this been resolved?

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<div class="post-metadata">

**Author:** ![anonymous8](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@anonymous8](https://discuss.google.dev/u/anonymous8)\
**Post date:** [May 23, 2017, 11:57am UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/5 "2017-05-23T11:57:52Z")

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I just got the same issue with that:

```auto
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ExtractVariables async="false" continueOnError="false" enabled="true" name="Extract-quota_limit">
  <DisplayName>Extract quota_limit</DisplayName>
  <Variable name="verifyapikey.verify-api-key.quota_limit">
  <Pattern>{quota_limit}</Pattern>
  </Variable> <VariablePrefix>quota</VariablePrefix>
  <Source>request</Source>
</ExtractVariables>

```

Had to remove **VariablePrefix.**

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<div class="post-metadata">

**Author:** ![dchiesa1](https://d3byx8b92xw3lq.cloudfront.net/user_avatar/discuss.google.dev/dchiesa1/32/15641_2.png) [@dchiesa1](https://discuss.google.dev/u/dchiesa1)\
**Post date:** [August 19, 2020, 5:10pm UTC](https://discuss.google.dev/t/extractvariables-not-shown-in-trace/276/6 "2020-08-19T17:10:18Z")

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Bug reference: b/70907462