Formfields adopt the attributes of the underlying paragraph or character Styles. Accordingly, you set the font size by applying an appropriate Style to the formfield before applying the protection.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Thanks, but it doesn't appear to be working that way for me. It seems to retain the formatting from fields elsewhere in the document, and not as a flow-on from the line it appears in.

The field needs to be the 'title' of the document, and as such needs to be much bigger than simple body copy, which is apparently what it appears as now.

Is there a way to 'set' this? You mention applying an appropriate style to the formfield, but how is this achieved?

Thanks.

The same way as you'd apply a Style to any other content:
a) create or modify an appropriate Style;
b) select the formfield and apply the Style.

See: https://support.office.com/en-us/art...5-9CBB6EDE1BA4

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Ok, thanks for that. I have tried it, but it doesn't seem to recognise that I have done that.

Any other thoughts on how I can get it to work properly? Is it perhaps a bug?