Adobe Bridge & Glyphs

I have just designed a typeface in Glyphs 3, and I have exported it as an OTF file. I am wanting to edit the Metadata of the Glyphs file and OTF file but when I try to in Adobe Bridge it says the following - This property cannot be modified.

Anyone know how to edit the Metadata of a Glyphs/OTF file either in Bridge or Glyphs itself?

Thank you.

What metadata do you want to edit? You can find most settings in Font Info > Font, or > Exports. Use custom parameters for more specific settings.