# mbsubstring

#### Availability

Flash Player 4. This function is deprecated in Flash 5 in favor of the `String.substr()` method.

#### Usage

    mbsubstring(value, index, count)

#### Parameters

`value` The multibyte string from which to extract a new multibyte string.

`index` The number of the first character to extract.

`count` The number of characters to include in the extracted string, not including the index character.

#### Returns

A string.

#### Description

String function; extracts a new multibyte character string from a multibyte character string.

#### See also

`String.substr()`