WAD Chart editor - Category Axis direction of texts

Hi,

I've created a chart web item in the WAD and am now trying to display the text of the category axis line (month texts in the X-axis) in Direction "Diagonal Up". The texts however are can only be shown (it seems) vertically or horizontally (not diagonally).

Is this functionality not enabled?

I use WAD 3.5 patch-level 7

Best Regards,

Olof Trönnberg