Can not set add Font and font siz to my ribbon

[JT7]

I am trying to add the font and font size to my ribbon and it keeps giving me errors, I have searched the net and tried Fonts, Font, GroupFont, FontDialog and nothing works

<control idMso="Fonts" />
<control idMso="FontSize" label="false" />

[JT7]

It says in the error Element <comboBox> is not expected in <menu>
ButI am not using a combobox

[JT7]

Ok, so it was inside a split button and it doesn't seem to like that, I moved it outside and it works