I have a Word-Document where I added some custom content control elements via XML for more time efficient editing of the document, since the Quick Parts > Document properties weren't enough. This worked fine so far. In some places automatic capitalization was needed, which worked fine using the properties, as you can do so in the "font" segment. In some other places I need automatic lower case text though and can't figure out how to accomplish that.

Can anyone help me out or simply tell me, if that's not possible?