# Writing to plc tag using a udt and custom property

**URL:** <https://forum.inductiveautomation.com/t/writing-to-plc-tag-using-a-udt-and-custom-property/80823>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [October 22, 2023, 4:14pm UTC](https://forum.inductiveautomation.com/t/writing-to-plc-tag-using-a-udt-and-custom-property/80823 "2023-10-22T16:14:45Z")\
**Posts on this page:** 1\
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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [October 22, 2023, 4:20pm UTC](https://forum.inductiveautomation.com/t/writing-to-plc-tag-using-a-udt-and-custom-property/80823/2 "2023-10-22T16:20:45Z")

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Hi Steve,

You've double nested your list of tag paths. Instead of a list of (one) strings, you have a list of a list of one string.

In the future, don't post screenshots of code, except perhaps to show editor context. Instead, use a code block:

> [@Wiki - how to post code on this forum](https://forum.inductiveautomation.com/t/wiki-how-to-post-code-on-this-forum/77831):
>
> This thread is intended as a short help file for all those struggling to post formatted code on the forum. Posting formatted code on the forum (and most others) is as simple as selecting the code and pressing the \</\> button. It works the same as applying Bold or Italic styles to your document. It preserves indentation and applies syntax highlighting. [How to post code]

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