# Not able to add input as value in API Body
**URL:** https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166
**Category:** Issues / Bugs
**Created:** [August 22, 2024, 6:30pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166 "2024-08-22T18:30:33Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@hubloteam7axro6](https://community.thunkable.com/u/hubloteam7axro6)
#### Post date: [August 22, 2024, 6:30pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/1 "2024-08-22T18:30:33Z")
In Advanced \> Web API , I am adding key as input and values in its body (multiform data) as some string and click on add button
As soon i click on add i get this error page :
Unexpected Application Error!
Cannot add property input, object is not extensible
TypeError: Cannot add property input, object is not extensible
at c. ([https://x.thunkable.com/static/js/498.5359026f.chunk.js:1:82920](https://x.thunkable.com/static/js/498.5359026f.chunk.js:1:82920))
at jo ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2708929](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2708929))
at As ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2727272](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2727272))
at bl ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2771822](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2771822))
at mc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759963](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759963))
at hc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759891](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759891))
at pc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759754](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759754))
at tc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756534](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756534))
at ic ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756925](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756925))
at Bi ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2697517](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2697517))
---
### Author:  [@matt\_conroy](https://community.thunkable.com/u/matt_conroy)
#### Post date: [August 22, 2024, 6:43pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/2 "2024-08-22T18:43:03Z")
Hi @hubloteam7axro6, thanks for flagging this. When you go back to the project after this error and try to add in the property and value again, does it still give you the error?
---
### Author:  [@hubloteam7axro6](https://community.thunkable.com/u/hubloteam7axro6)
#### Post date: [August 24, 2024, 1:02pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/3 "2024-08-24T13:02:10Z")
Hello Matt,
We tried again today , got same error again -
Unexpected Application Error!
Cannot add property input, object is not extensible
TypeError: Cannot add property input, object is not extensible
at c. ([https://x.thunkable.com/static/js/498.5359026f.chunk.js:1:82920](https://x.thunkable.com/static/js/498.5359026f.chunk.js:1:82920))
at jo ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2708929](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2708929))
at As ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2727272](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2727272))
at bl ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2771822](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2771822))
at mc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759963](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759963))
at hc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759891](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759891))
at pc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759754](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2759754))
at tc ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756534](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756534))
at ic ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756925](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2756925))
at Bi ([https://x.thunkable.com/static/js/main.fcee9d02.js:1:2697517](https://x.thunkable.com/static/js/main.fcee9d02.js:1:2697517))
---
### Author:  [@hubloteam7axro6](https://community.thunkable.com/u/hubloteam7axro6)
#### Post date: [August 26, 2024, 6:09am UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/4 "2024-08-26T06:09:41Z")
Can someone update on this pls ?
---
### Author:  [@matt\_conroy](https://community.thunkable.com/u/matt_conroy)
#### Post date: [August 26, 2024, 1:09pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/5 "2024-08-26T13:09:31Z")
Hi @hubloteam7axro6, we’re still looking into this. I will get back to you in this thread as we learn more.
---
### Author:  [@matt\_conroy](https://community.thunkable.com/u/matt_conroy)
#### Post date: [August 26, 2024, 7:29pm UTC](https://community.thunkable.com/t/not-able-to-add-input-as-value-in-api-body/3154166/6 "2024-08-26T19:29:31Z")
@hubloteam7axro6 Thanks for your patience. We should have a fix out this week for this issue.