Support for Span in FormattedString (Xamarin)

[michelevirgilio]

Hi,
it seems that Span inside a FormattedString is not supported by XamlCss. Example:

 <Label>
      <Label.FormattedText>
          <FormattedString>
              <Span Text="Test"/>
          </FormattedString>
      </Label.FormattedText>
  </Label>

This css does nothing:

Span {
    TextColor: "Red";
}

Any help?
Thanks