[reportlab-users] Custom Font In TextField

[Luke Bowes]

I'm trying to use a different font other than the default 14 in a TextField but keep getting this error

ValueError: form font name, 'Calibri', is not one of the standard 14 fonts

I register the font

pdfmetrics.registerFont(TTFont('Calibri', 'Calibri.tff'))

but when i choose the font in the TextField I get the error

Any idea where I am going wrong please?