# Fish Fuction for creating lifts

**URL:** <https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699>\
**Category:** FLAC3D\
**Created:** [September 17, 2024, 8:44pm UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699 "2024-09-17T20:44:19Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Adams](https://avatars.discourse-cdn.com/v4/letter/a/96bed5/32.png) [@Adams](https://forum.itascainternational.com/u/Adams)\
**Post date:** [September 17, 2024, 8:44pm UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699/1 "2024-09-17T20:44:19Z")

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I am trying to use the fish function to create my lifts. It’s breaking by saying…\*\*\* Bad conversion of parameter number 7 (group\_name)…\*\*\*

I think it is seeing the group\_name as a string and not as a placeholder for my lift group name. Please how can I resolve this?

 ![Model FISH](https://canada1.discourse-cdn.com/flex031/uploads/itasca/original/2X/7/7054c8079d25a444f71885f5cf36841d41c7fa57.png)

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**Author:** ![cheng](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@cheng](https://forum.itascainternational.com/u/cheng)\
**Post date:** [September 18, 2024, 1:52am UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699/2 "2024-09-18T01:52:58Z")

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using  
[group\_name]  
since it is a FISH variable.

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<div class="post-metadata">

**Author:** ![Adams](https://avatars.discourse-cdn.com/v4/letter/a/96bed5/32.png) [@Adams](https://forum.itascainternational.com/u/Adams)\
**Post date:** [September 18, 2024, 2:10am UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699/3 "2024-09-18T02:10:41Z")

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Thank you. I think it’s still not recognizing it.

 ![Model fish 1](https://canada1.discourse-cdn.com/flex031/uploads/itasca/original/2X/2/2eaee268e70dad69febc7b1786c39ce9c8b898e2.png)

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**Author:** ![Theophile](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.itascainternational.com/theophile/32/299_2.png) [@Theophile](https://forum.itascainternational.com/u/Theophile)\
**Post date:** [September 18, 2024, 10:24am UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699/4 "2024-09-18T10:24:46Z")

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Hi.

It seems like no zone is in the group.  
Which command did you use to affect the group?  
What happens if you plot the zones and color them by groups?

Cheers!

Theophile

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**Author:** ![cheng](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@cheng](https://forum.itascainternational.com/u/cheng)\
**Post date:** [September 18, 2024, 2:37pm UTC](https://forum.itascainternational.com/t/fish-fuction-for-creating-lifts/1699/5 "2024-09-18T14:37:57Z")

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Please check doc of FISH “string.build”, it might be

> group\_name = string.build(“L%1”, lift).

and check if the group\_name is as you wished:

> io.out(group\_name)

and this group is in your model.