# Invalid parameter: lang

**URL:** https://community.thunkable.com/t/invalid-parameter-lang/672581
**Category:** Questions about Thunkable X
**Created:** [July 11, 2020, 8:40pm UTC](https://community.thunkable.com/t/invalid-parameter-lang/672581 "2020-07-11T20:40:04Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![amadalievdaniyarzapm](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/amadalievdaniyarzapm/32/75741_2.png) [@amadalievdaniyarzapm](https://community.thunkable.com/u/amadalievdaniyarzapm)
#### Post date: [July 11, 2020, 8:40pm UTC](https://community.thunkable.com/t/invalid-parameter-lang/672581/1 "2020-07-11T20:40:04Z")

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Hi guys!  
I want to try create a translator which can translate any lang to another. But I have problem with parameters of lang. When I set source lang from List Viewer, it give me: “invalid parameter: lang”. Please help me.

Sorry about my english if I have mistakes.

 ![TestPic](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/a/7/a70ec2c80b08c6da2c713707ee8022fb061545b5.png)

But when I set target or source lang from Text Input it has working. And I think that List Viewer changes the text. Please explain me this problem.

 ![TEstP](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/2/e/2ecc7b1f5c1c197755fec26c07189a63f298cf31.png)

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### Author: ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)
#### Post date: [July 13, 2020, 11:03am UTC](https://community.thunkable.com/t/invalid-parameter-lang/672581/2 "2020-07-13T11:03:31Z")

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Hey @amadalievdaniyarzapm Welcome to the communtiy!

Is this when you are clicking on English or Russian or both?

Also, you might have omitted the blocks, but I can’t see where you set either the `source` or the `target` to be the contents of the list viewer - are you setting the listviewer elements in the Designer?

Finally, is there some particular reason why you need two list variables like this? Both `source` and `target` look identical to me.

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### Author: ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)
#### Post date: [November 8, 2024, 12:27pm UTC](https://community.thunkable.com/t/invalid-parameter-lang/672581/3 "2024-11-08T12:27:12Z")

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