# e.findIdx is not a function error when accessing a value in a tuple
**URL:** https://forum.makecode.com/t/e-findidx-is-not-a-function-error-when-accessing-a-value-in-a-tuple/28937
**Category:** Help
**Created:** [May 24, 2024, 3:27pm UTC](https://forum.makecode.com/t/e-findidx-is-not-a-function-error-when-accessing-a-value-in-a-tuple/28937 "2024-05-24T15:27:14Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@ARandomGuyOnMakeCode](https://forum.makecode.com/u/ARandomGuyOnMakeCode)
#### Post date: [May 24, 2024, 3:27pm UTC](https://forum.makecode.com/t/e-findidx-is-not-a-function-error-when-accessing-a-value-in-a-tuple/28937/1 "2024-05-24T15:27:14Z")
I was trying to access a value in a tuple, but when I do, I get the “e.findIdx is not a function” error. This doesn’t happen when I do the same thing with an array, just a tuple.
Here is an example of what I’m trying to do:
```auto
let exampleTuple: [number,number] = [5,6]
let value: number = exampleTuple[0]
```
I honesty have no clue what is wrong. All help is appreciated.
---
### Author:  [@Sarge](https://forum.makecode.com/u/Sarge)
#### Post date: [May 25, 2024, 6:01pm UTC](https://forum.makecode.com/t/e-findidx-is-not-a-function-error-when-accessing-a-value-in-a-tuple/28937/2 "2024-05-25T18:01:39Z")
This is usually a typing issue so throwing casts at it should eventually fix it.
```auto
let exampleTuple: [number,number] = [5,6]
let value: number = (exampleTuple as any[])[0]
```
Here you cast the tuple to an any array before accessing it. Didn’t test it but it should work
---
### Author:  [@ARandomGuyOnMakeCode](https://forum.makecode.com/u/ARandomGuyOnMakeCode)
#### Post date: [May 27, 2024, 6:47pm UTC](https://forum.makecode.com/t/e-findidx-is-not-a-function-error-when-accessing-a-value-in-a-tuple/28937/3 "2024-05-27T18:47:13Z")
Worked like a charm! Thank you very much 🙂.