# Let math function support GraphQL Variables

**URL:** <https://discuss.dgraph.io/t/let-math-function-support-graphql-variables/8803>\
**Category:** Dgraph\
**Tags:** dgraph, kind:enhancement, status:accepted, area:querylang:vars\
**Created:** [November 22, 2019, 5:51am UTC](https://discuss.dgraph.io/t/let-math-function-support-graphql-variables/8803 "2019-11-22T05:51:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![diggy](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/diggy/32/3666_2.png) [@diggy](https://discuss.dgraph.io/u/diggy)\
**Post date:** [November 22, 2019, 5:51am UTC](https://discuss.dgraph.io/t/let-math-function-support-graphql-variables/8803/1 "2019-11-22T05:51:50Z")

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**Moved from GitHub [dgraph/4309](https://github.com/dgraph-io/dgraph/issues/4309)**

_Posted by_ [zhaodengchang](https://github.com/zhaodengchang):

### What you wanted to do

[GraphQL Variables](https://docs.dgraph.io/query-language/#graphql-variables) can be used in math function

### What you actually did

We use GraphQL Variables to input a float value $a to the Dgraph query , and want to do some calculation with math function, e.g. : math($a + 1.23)

### Why that wasn’t great, with examples

Currently it doesn’t work.

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<div class="post-metadata">

**Author:** ![diggy](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/diggy/32/3666_2.png) [@diggy](https://discuss.dgraph.io/u/diggy)\
**Post date:** [March 11, 2020, 11:49pm UTC](https://discuss.dgraph.io/t/let-math-function-support-graphql-variables/8803/2 "2020-03-11T23:49:23Z")

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[MichaelJCompton](https://github.com/MichaelJCompton) _commented_ :

This looks like a reasonable feature request.

I’m tagging it as accepted, which means it will get into our backlog of features to consider.

If we decide to implement it, we’ll post an update here.

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**Author:** ![BenW](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/benw/32/7532_2.png) [@BenW](https://discuss.dgraph.io/u/BenW)\
**Post date:** [June 22, 2021, 7:14am UTC](https://discuss.dgraph.io/t/let-math-function-support-graphql-variables/8803/3 "2021-06-22T07:14:59Z")

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Is this possible? I want to return the `$offset` value in the query result.