Resource Label Uppercase?

Silly question, but I need the model label to be uppercase some part of the string.

public static function getModelLabel(): string
{
    return  "SSML Applications";
}

public static function getModelLabel(): string
{
    return  "SSML Applications";
}

public static function getModelLabel(): string
{
    return  "SSML Applications";
}

public static function getModelLabel(): string
{
    return  "SSML Applications";
}

but results to the attached image.

Still outputs "Ssml Applications" rather than "SSML Applications".

Solution

This is solved!

 protected static ?string $breadcrumb = "SSML Applications";

protected static ?string $navigationLabel = "SSML Applications";

 protected static ?string $breadcrumb = "SSML Applications";

protected static ?string $navigationLabel = "SSML Applications";

 protected static ?string $breadcrumb = "SSML Applications";

protected static ?string $navigationLabel = "SSML Applications";

 protected static ?string $breadcrumb = "SSML Applications";

protected static ?string $navigationLabel = "SSML Applications";