How do you add Immunity to Fire?

[Bernie]

How do you add Immunity to Fire?

I know how to add Fire Resistance but what about Immunity?

[Zacchaeus]

If it's for an NPC then type fire into the immunity section of the NPC sheet.

If for a PC then you'll need an effect IMMUNE: fire.

More on effects here. https://fantasygroundsunity.atlassian.net/wiki/spaces/FGCP/pages/996642031/5E+Effects+for+Advanced+Automation