# Tex processing hyperTTS - replacement RegEX

**URL:** <https://forums.ankiweb.net/t/tex-processing-hypertts-replacement-regex/34010>\
**Category:** Add-ons\
**Created:** [September 6, 2023, 5:25pm UTC](https://forums.ankiweb.net/t/tex-processing-hypertts-replacement-regex/34010 "2023-09-06T17:25:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Zendi](https://avatars.discourse-cdn.com/v4/letter/z/c5a1d2/32.png) [@Zendi](https://forums.ankiweb.net/u/Zendi)\
**Post date:** [September 6, 2023, 5:25pm UTC](https://forums.ankiweb.net/t/tex-processing-hypertts-replacement-regex/34010/1 "2023-09-06T17:25:14Z")

</div>

I would like to add audio using hyperTTS to my cloze cards but I don’t know exactly how to use RegEX to set up replacement rules.

In particular, I have no idea how to access the match group to use it as a replacement.

Instead of creating an audio voicing, for example, {{c1::der}} , I would like it to process only the “der”.

I tried some common syntaxes e.g. using $1 but none worked, as you can see in the image attached.

Could someone please help me?

 ![replacement](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/2X/b/be09a5cc129300b9859ce635c82788f34b3b9c15.png)