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# How to create my own variables?

In addition to the variables we offer in Fotostudio, you can ****create your own variables**** to use in your emails and contracts.

To start, you need to create a new custom field in [Settings > Modules > Custom Fields](https://www.fotostudio.io/app/custom_fields).

||| To learn more about custom fields, see the __Custom Fields__ category.

![Create a custom field](https://storage.crisp.chat/users/helpdesk/website/-/b/f/d/2/bfd2e1044d6e8800/3ee79002-e3ec-428b-a87a-7d157c_7bgtb0.png)

When creating this field, you will find a __"Variable"__ option to activate in order to associate a variable with this custom field. The variable will have a format {custom_XXX}.

![Custom variable](https://storage.crisp.chat/users/helpdesk/website/-/c/5/6/8/c5688dab45057000/d8e7f6d8-d827-4e14-98e8-0c4aa2_5bg22t.png)

You can then use this variable in your emails and contracts, and it will be automatically replaced by the content of the field that is associated.