# Initialization

Here is how to initialize the Wepin widget Unity SDK.

## Create Wepin Instance

Add the Wepin and Types namespaces.

```csharp
using WepinSDK.Wepin;
using WepinSDK.Types;
```

Create a Wepin instance in the <mark style="color:blue;">`start()`</mark> function of the project.

```csharp
Wepin _wepin = Wepin.Instance;
```

## Initialize

Use the App ID and App Key assigned after app registration to initialize the instance.

```csharp
_wepin.Initialize("app_id_eg12sf3491azgs520", "ak_test_ghq1D5s1sfG234sbnhdsw24mnovk313", new Attributes()
{
    defaultLanguage = "ko",
    defaultCurrency = "krw"
});
```

The parameters for initialization are as follows.

* **`appId`**: *String*\
  App ID assigned during registration
* **`appKey`**: *String*\
  App Key assigned during registration
* **`attributes`**: *WepinSDK.Types.Attributes*\
  Properties of the Wepin Widget
  * **`defaultLanguage`**: *String*\
    The language to be displayed on the widget. The default value is <mark style="color:blue;">`ko`</mark>. The currently supported languages are <mark style="color:blue;">`en`</mark> and <mark style="color:blue;">`ko`</mark>.
  * **`defaultCurrency`:** *String*\
    The currency to be displayed on the widget. The default value is <mark style="color:blue;">`KRW`</mark>. The currently supported currencies are <mark style="color:blue;">`USD`</mark> and <mark style="color:blue;">`KRW`</mark>.<br>

## `isInitialized`

You can use the <mark style="color:blue;">`isInitialized`</mark> method to check if the Wepin instance has been initialized successfully.

The returned value is as follows.

* *boolean*\
  init result; <mark style="color:orange;">`true`</mark> if Wepin SDK is already initialized, otherwise <mark style="color:orange;">`false`</mark>.

```csharp
if(_wepin.isInitialized()) {
    // Success to initialize wepin
}
```