# Problem with card template

**URL:** <https://forums.ankiweb.net/t/problem-with-card-template/56616>\
**Category:** Card Design\
**Created:** [March 3, 2025, 8:21pm UTC](https://forums.ankiweb.net/t/problem-with-card-template/56616 "2025-03-03T20:21:29Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Rad](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@Rad](https://forums.ankiweb.net/u/Rad)\
**Post date:** [March 3, 2025, 8:21pm UTC](https://forums.ankiweb.net/t/problem-with-card-template/56616/1 "2025-03-03T20:21:29Z")

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I had a deck which used to be working fine. After I don’t know which update, case sensitivity seems to be introduced. Now I have a problem with this deck, when viewing Back Preview:

```auto
Back template has a problem:
Found '<U+2068>{{hanzi}}<U+2069>', but there is no field called '<U+2068>hanzi<U+2069>'

```

That makes sense because there is a field called `Hanzi`.  
I can rename this value in Back Template, and then Back Preview is correctly displayed.  
However when I save these changes, I get an error: `Card template 2 in note type 'Heisig-...' has a problem. Field 'hanzi' not found.`

 ![image](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/3X/2/1/210bb04fa3fd176a16d06876e2ca9db5bf2576ce.png)

How is it possible? I have just changed this value in template and it is correctly displayed. But I cannot save these changes to card type and I cannot use this card until this is changed.

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<div class="post-metadata">

**Author:** ![Danika\_Dakika](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/danika_dakika/32/17815_2.png) [@Danika\_Dakika](https://forums.ankiweb.net/u/Danika_Dakika)\
**Post date:** [March 3, 2025, 8:32pm UTC](https://forums.ankiweb.net/t/problem-with-card-template/56616/2 "2025-03-03T20:32:17Z")

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[Field Replacements - Anki Manual](https://docs.ankiweb.net/templates/fields.html#basic-replacements) – `Hanzi` and `hanzi` are not the same thing. You’ll need to update it on each card type that has the problem – and check both front and back templates.

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<div class="post-metadata">

**Author:** ![Rad](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@Rad](https://forums.ankiweb.net/u/Rad)\
**Post date:** [March 3, 2025, 9:09pm UTC](https://forums.ankiweb.net/t/problem-with-card-template/56616/3 "2025-03-03T21:09:22Z")

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Ok, thanks. The actual problem was that I was changing it for only one card.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\
**Post date:** [April 2, 2025, 9:09pm UTC](https://forums.ankiweb.net/t/problem-with-card-template/56616/4 "2025-04-02T21:09:38Z")

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