Changing spell checking language from UK to US English

[Dewlally]

I'm using Publisher in the UK to create a book for US readers and would like to use the spell check function for US rather than UK English.

I'm using a Mac and have read elsewhere on this site that Publisher uses the Mac's system dictionary for spell-checking. I've switched spelling to US English in the Mac Preferences-Keyboard-Text, switched to US in Mac Preferences-Input Sources and in Publisher Preferences–General-Language, but the spell checker is still using the English UK dictionary (so it's underlining US spellings like "favor" and "color"). And when I select a text box and check the "Language" in the character tab, I can only see UK English as an option.
I've tried restarting the app and rebooting the Mac (after setting all language preferences to US).
The spell-checker works correctly for US spellings in other apps like Pages (which I assume use the system spelling dictionary).
Any idea how I can fix this.

[MEB]

Hi @Dewlally,
Welcome to Affinity Forums
Go to System Preferences > Keyboard section, Text tab (on top), click the Spelling dropdown on the right and select the last option Set Up.... Add/tick U.S. English  and press Done. Restart Affinity Publisher. A new English option should appear in the Language dropdown now. It has no locale/region specified - i mean it appears just as English in the list - but should work correctly: it's US English (the missing locale issue was already logged).

[Dewlally]

Brilliant! Thanks for the speedy response. I've been using a paragraph style for the text, so was able to switch the spelling language in that and check the whole doucument.