# Error message

**URL:** <https://forum.certara.com/t/error-message/3447>\
**Category:** PML School\
**Created:** [October 28, 2019, 4:25pm UTC](https://forum.certara.com/t/error-message/3447 "2019-10-28T16:25:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![etellez](https://avatars.discourse-cdn.com/v4/letter/e/ad7895/32.png) [@etellez](https://forum.certara.com/u/etellez)\
**Post date:** [October 28, 2019, 4:25pm UTC](https://forum.certara.com/t/error-message/3447/1 "2019-10-28T16:25:11Z")

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I am in trying to use PML in a learning exercise, I keep getting this error message:

Error line 8: Expected: ‘)’  
C = A1/V  
^  
Error line 25: Error: Assignment only allowed at top level  
fixef(tvCl = c(, 12, ))  
^

Any ideas on how to solve the problem?

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<div class="post-metadata">

**Author:** ![bwendt](https://avatars.discourse-cdn.com/v4/letter/b/f4b2a3/32.png) [@bwendt](https://forum.certara.com/u/bwendt)\
**Post date:** [October 28, 2019, 4:42pm UTC](https://forum.certara.com/t/error-message/3447/2 "2019-10-28T16:42:21Z")

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The lines that you show do not contain any syntax errors. It expects a close parentheses in a preceding line.

Can you provide the full PML code to diagnose the issue?

Bernd