# How to mark warning/syntax errors in "Processing Language" Extension for VS Code?

**URL:** https://discourse.processing.org/t/how-to-mark-warning-syntax-errors-in-processing-language-extension-for-vs-code/27772
**Category:** Processing
**Created:** [February 12, 2021, 7:58pm UTC](https://discourse.processing.org/t/how-to-mark-warning-syntax-errors-in-processing-language-extension-for-vs-code/27772 "2021-02-12T19:58:56Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![PedroGJ27](https://avatars.discourse-cdn.com/v4/letter/p/eb9ed0/32.png) [@PedroGJ27](https://discourse.processing.org/u/PedroGJ27)
#### Post date: [February 12, 2021, 7:58pm UTC](https://discourse.processing.org/t/how-to-mark-warning-syntax-errors-in-processing-language-extension-for-vs-code/27772/1 "2021-02-12T19:58:56Z")

</div>

Hi, I’m using “Processing Language” extension for Visual Studio Code in Windows, and I already did every step necessary in order to execute successfully a `.pde` file (which you can find on [GitHub - TobiahZ/processing-vscode: A Visual Studio Code extension for the programming language Processing](https://github.com/TobiahZ/processing-vscode)). The problem is, how can I configure the extension, so it could mark an possible warning/syntax error in a specific line automatically (like the actual Processing App does)? The next image shows a clear example of what I’m referring to.

 ![Processing APP & VS Code](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/2/28073e50db8e6ce1887130cae6c7e5940930dd0f.png)

As you can see, Processing (at left) does mark the error on the 11th line. But, when I try on VS Code (at right), the supposed error does not appear visible:

I have installed Processing 3.0 for Windows (just in case this information may be useful to you). Thanks in advance!

---

<div class="post-metadata">

### Author: ![josephh](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/josephh/32/210_2.png) [@josephh](https://discourse.processing.org/u/josephh)
#### Post date: [February 13, 2021, 11:38pm UTC](https://discourse.processing.org/t/how-to-mark-warning-syntax-errors-in-processing-language-extension-for-vs-code/27772/2 "2021-02-13T23:38:23Z")

</div>

Hi,

Welcome to the forum! 😉

If the feature is not in the extension, feel free to modify the code and make a pull request or open an issue on the GitHub page :

> **[TobiahZ/processing-vscode](https://github.com/TobiahZ/processing-vscode/issues)**
>
> s

---

<div class="post-metadata">

### Author: ![PedroGJ27](https://avatars.discourse-cdn.com/v4/letter/p/eb9ed0/32.png) [@PedroGJ27](https://discourse.processing.org/u/PedroGJ27)
#### Post date: [February 15, 2021, 1:44am UTC](https://discourse.processing.org/t/how-to-mark-warning-syntax-errors-in-processing-language-extension-for-vs-code/27772/3 "2021-02-15T01:44:12Z")

</div>

Thanks for the reply. I have posted a request on the GitHub page, still waiting for a replay.

Meanwhile, I made a little of research, and tried to install the “Language Support for Java™ by Red Hat” & “Java Extension Pack” extensions, making sure to configure then exactly as the given instructions dictate. But none of the extensions (correctly set on each of the `.json` files) solved my problem with Processing 😕