# Formula parameter is not defined although it is actually defined **URL:** \ **Category:** Ask us anything\ **Tags:** formulas\ **Created:** [April 1, 2023, 12:38pm UTC](https://community.weweb.io/t/formula-parameter-is-not-defined-although-it-is-actually-defined/2160 "2023-04-01T12:38:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![lancelot](https://avatars.discourse-cdn.com/v4/letter/l/cab0a1/32.png) [@lancelot](https://community.weweb.io/u/lancelot)\ **Post date:** [April 1, 2023, 12:38pm UTC](https://community.weweb.io/t/formula-parameter-is-not-defined-although-it-is-actually-defined/2160/1 "2023-04-01T12:38:29Z")
Hi everyone, Maybe it is a very dumb question, but I’ve struggled all morning to create a simple formula in WeWeb to check an email syntax. I have created the “emailAddress” parameter but when I use it in the formula it says that it is not defined. Why ? ![image](https://us1.discourse-cdn.com/flex016/uploads/weweb/original/2X/9/922b5228bb2239c161a3d783ab9c79d569e34235.png) Am I doing something wrong ? Thanks in advance. 🙂 ---
**Author:** ![dorilama](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/dorilama/32/10403_2.png) [@dorilama](https://community.weweb.io/u/dorilama)\ **Post date:** [April 1, 2023, 1:18pm UTC](https://community.weweb.io/t/formula-parameter-is-not-defined-although-it-is-actually-defined/2160/2 "2023-04-01T13:18:40Z")
It should be all right anyway. Try the formula in a real element and it should work. ---
**Author:** ![Alexis](https://sea2.discourse-cdn.com/flex016/user_avatar/community.weweb.io/alexis/32/13248_2.png) [@Alexis](https://community.weweb.io/u/Alexis)\ **Post date:** [April 3, 2023, 9:11am UTC](https://community.weweb.io/t/formula-parameter-is-not-defined-although-it-is-actually-defined/2160/4 "2023-04-03T09:11:19Z")
Its a display issue, we plan to add a default value input next to the type selector for your parameters so you can play with your parameters inside your formulas without having this error