# How to parameterize in created language?

**URL:** <https://racket.discourse.group/t/how-to-parameterize-in-created-language/1764>\
**Category:** Questions & Answers\
**Created:** [March 8, 2023, 6:37pm UTC](https://racket.discourse.group/t/how-to-parameterize-in-created-language/1764 "2023-03-08T18:37:07Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kalimehtar](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/kalimehtar/32/394_2.png) [@Kalimehtar](https://racket.discourse.group/u/Kalimehtar)\
**Post date:** [March 8, 2023, 6:37pm UTC](https://racket.discourse.group/t/how-to-parameterize-in-created-language/1764/1 "2023-03-08T18:37:07Z")

</div>

How to set parameters in own language?

If I use in #%module-begin (parameter-name new-value), then it retains new-value even in modules, that requires my language module.

If I try to set parameterize around the module body, then `require: not at module level or top level` raised.

I can wrap every expression of my language with parameterize, but it is cumbersome and may reduce performance.

Is there correct way to change a parameter in created language?

---

<div class="post-metadata">

**Author:** ![sorawee](https://avatars.discourse-cdn.com/v4/letter/s/ea5d25/32.png) [@sorawee](https://racket.discourse.group/u/sorawee)\
**Post date:** [March 8, 2023, 7:47pm UTC](https://racket.discourse.group/t/how-to-parameterize-in-created-language/1764/2 "2023-03-08T19:47:35Z")

</div>

One possibility is to wrap [`splicing-parameterize`](https://docs.racket-lang.org/reference/splicing.html#%28form._%28%28lib._racket%2Fsplicing..rkt%29._splicing-parameterize%29%29) over the whole body.