EyeonTips:Script/Reference/Applications/Fusion/Classes/Fusion/SetPrefs
From VFXPedia
Setting the preferences for PathMaps can be a pain. The syntax for SetPref makes it nearly impossible to access these directly. Instead, try the following.
map = fusion:GetPrefs("Global.Paths.Map") map["Fonts:"] = [[C:\Windows\Fonts\]] fusion:SetPrefs("Global.Paths.Map", map)