Style settings with dash in Tinymce v2 format meny

Hi,

So the new tinymce editor, conveniently, all the examples of setting styles using anonymous objects in C# is using the example "color", but what do I do if I want to set another style, say text-align?

This will obviosuly not compile:

configuration.Default()
.StyleFormats(new {
   title = "Alignment",
   items = new[] {
      new {title = "Left", block = "p", styles = { text-align = "left"}},
      new {title = "Center", block = "p", styles = { text-align = "center"}}
   })...

I have tried various different strings with no success, like styles = "text-align: center". I am guessing there is one, but I am just not able to guess it.

Anyone have an idea how to achieve this?