I have read the documentation where is explained how to replace line breaks with html tag.

Inside a jquery script I use this code:

@{
    foreach(var itemfinale in CurrentPage.Children)
    {
        if(itemfinale.HasValue("descrizioneCompleta"))
        {                       
            <text>
               @{
                var multiLine = @itemfinale.descrizioneCompleta;
               }

               $(".sfondo-nero-opaco").append("@Umbraco.ReplaceLineBreaksForHtml(multiLine)");
            </text>
        }
    }
}

But I received this error:

The best overloaded method match for 'Umbraco.Web.UmbracoHelper.ReplaceLineBreaksForHtml(string)' has some invalid arguments

On line:

@Umbraco.ReplaceLineBreaksForHtml(multiLine);

Where am I wrong ?