# Error Cannot coerce value '15' into type: interface java.util.List

**URL:** <https://forum.inductiveautomation.com/t/error-cannot-coerce-value-15-into-type-interface-java-util-list/33292>\
**Category:** Ignition\
**Created:** [March 21, 2020, 6:25pm UTC](https://forum.inductiveautomation.com/t/error-cannot-coerce-value-15-into-type-interface-java-util-list/33292 "2020-03-21T18:25:38Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![etlikmilos](https://avatars.discourse-cdn.com/v4/letter/e/fbc32d/32.png) [@etlikmilos](https://forum.inductiveautomation.com/u/etlikmilos)\
**Post date:** [March 21, 2020, 6:25pm UTC](https://forum.inductiveautomation.com/t/error-cannot-coerce-value-15-into-type-interface-java-util-list/33292/1 "2020-03-21T18:25:38Z")

</div>

Hi all  
I have problem with variable i need write memory tag from SQL task and i have error.  
If I set my variable to textfield everything is ok but for my Tag doesent work in ☹  
I tryed with int() and without and still same ☹  
Please can you help me.  
Here is Code what i have wrong ?  
Thank you

 ![code](https://us1.discourse-cdn.com/inductiveautomation/original/2X/0/0cf5f6e4246d54567d9165d02e27b4a225fca476.png) ![error](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/c5372417aa637353cc62b0a1947ae20fb4f3e68a.png) ![myTag](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/d947147ea88493d06698de6eeb17694f20a8bd22.png)

---

<div class="post-metadata">

**Author:** ![bmusson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bmusson/32/87530_2.png) [@bmusson](https://forum.inductiveautomation.com/u/bmusson)\
**Post date:** [March 21, 2020, 8:52pm UTC](https://forum.inductiveautomation.com/t/error-cannot-coerce-value-15-into-type-interface-java-util-list/33292/2 "2020-03-21T20:52:06Z")

</div>

Change line 4 to:

```auto
system.tag.writeAsync([“[default]adapter/ID”], [int(query)])
```

writeAsync expects a **list** of tags paths and a **list** of values, even if you’re only writing to one tag.

---

<div class="post-metadata">

**Author:** ![etlikmilos](https://avatars.discourse-cdn.com/v4/letter/e/fbc32d/32.png) [@etlikmilos](https://forum.inductiveautomation.com/u/etlikmilos)\
**Post date:** [March 21, 2020, 10:18pm UTC](https://forum.inductiveautomation.com/t/error-cannot-coerce-value-15-into-type-interface-java-util-list/33292/3 "2020-03-21T22:18:24Z")

</div>

Thank you so much. I am beginner in the Ignitinon. Thank you 😃