> For the complete documentation index, see [llms.txt](https://docs.wem.io/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wem.io/platform/wemreference/functions/localization/currentlanguage.md).

# CurrentLanguage

{% hint style="info" %}
The current language active in the Runtime, as configured in the project settings and optionally changed/selected by the user, or the "Change language" process node, in the active session.

This function is SQL compatible. For more information about SQL compatibility, see our [documentation](/platform/wemreference/sql-compatibility.md).
{% endhint %}

{% hint style="success" %}
Returns the <mark style="color:green;">language</mark> which is currently active in the Runtime User session, based on the configuration in the Portal Settings.
{% endhint %}

{% hint style="info" %}
**Underscore or Hyphen**

The Language Code or Keyword is used with underscore and no doublequotes:\
\&#xNAN;**`nl_NL`** or **`en_US`**

The Language as a value, as displayed on a page or used as a text-parameter, uses a hyphen:\
"**nl-NL**" or "**en-US**" (doublequotes in expression as text) or nl-NL / en-US as plain values on page.

When a function or a process node expects a language value as input, it may in some cases accept the keyword (nl\_NL) and in other cases the ToString value ("nl-NL"). You can then choose to use the text literal (like "nl-NL") or use the ToString(language) function, like `ToString(CurrentLanguage)` or `ToString(nl_NL)`.
{% endhint %}

<details>

<summary><em><code>CurrentLanguage</code></em></summary>

`CurrentLanguage` \
:thumbsup:*Result:* `en_US` *(underscored keyword)* OR `en-US` *(hyphened when directly displayed on a page as a label)*

`ToString(CurrentLanguage)`\
:thumbsup:*Result:* en-US *(hyphened text value)*

*Comparisons, assuming the actual current language is* **`en_US`**

`CurrentLanguage = en_US`\
:thumbsup:*Result:* yes

`CurrentLanguage = nl_NL`\
:thumbsup:*Result:* no (because it is `en_US`)

`CurrentLanguage = "en-US"`\
:thumbsdown:warning: expression contains a type mismatch (keyword expected, string used)

`CurrentLanguage = nl_NL`\
:thumbsup:*Result:* no (because it is `en_US`)

`ToString(CurrentLanguage) = "en-US"`\
:thumbsup:*Result:* yes

`ToString(CurrentLanguage) = "not a language"`\
:thumbsup:*Result:* no

`ToString(CurrentLanguage) = ToString(en_US)`\
:thumbsup:*Result:* yes

`ToString(en_US) = "en-US"`\
:thumbsup:*Result:* yes

</details>


---

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