# UDT Array Binding Issue

**URL:** <https://forum.inductiveautomation.com/t/udt-array-binding-issue/109211>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [July 31, 2025, 3:54pm UTC](https://forum.inductiveautomation.com/t/udt-array-binding-issue/109211 "2025-07-31T15:54:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Wheato](https://avatars.discourse-cdn.com/v4/letter/w/51bf81/32.png) [@Wheato](https://forum.inductiveautomation.com/u/Wheato)\
**Post date:** [July 31, 2025, 3:54pm UTC](https://forum.inductiveautomation.com/t/udt-array-binding-issue/109211/1 "2025-07-31T15:54:10Z")

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Hi,

I have a parameter array i am trying to bind, but the tag names are numbered and i think this is causing issues when trying to bind them. Does anyone know a fix for this? (If that is the problem). If i select 4 from the property selector it puts quotation marks around the 4 , i have tried it without and it doesnt work either.

 ![data_array](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/0/4017d615772555a127d6bd3a4ef8c8919f272e47.png)  
 ![error_1](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/d/edc8a6d0416f2b157484f1afa33cbe1474e4cfc0.png)  
 ![error_2](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/6/d6b72b1d56f51dd220b411d17ea7d2e003e529cd.png)

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<div class="post-metadata">

**Author:** ![BigByte](https://avatars.discourse-cdn.com/v4/letter/b/f17d59/32.png) [@BigByte](https://forum.inductiveautomation.com/u/BigByte)\
**Post date:** [July 31, 2025, 4:26pm UTC](https://forum.inductiveautomation.com/t/udt-array-binding-issue/109211/3 "2025-07-31T16:26:40Z")

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It seems to think your "week\_day" part is an object, not an array, so it's assuming the key is a string, not an array index. The number of elements is shown in curly braces, as opposed to square brackets when I recreated it on my end

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/9/d94fdd6a03f518731bbfbc29ef804370524c150b.png)

What's the binding on the top-most "data" parameter? Try right-clicking on "week\_day", selecting "change to", and select "array".

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<div class="post-metadata">

**Author:** ![Wheato](https://avatars.discourse-cdn.com/v4/letter/w/51bf81/32.png) [@Wheato](https://forum.inductiveautomation.com/u/Wheato)\
**Post date:** [July 31, 2025, 4:39pm UTC](https://forum.inductiveautomation.com/t/udt-array-binding-issue/109211/4 "2025-07-31T16:39:39Z")

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Thank you, this has worked