Add function to update digits on pref change

prefs.lua

@@ -2,6 +2,15 @@ local addonName, addon = ...
 local childName = addon['childName']
 local child = addon[childName]
 local L = LibStub("AceLocale-3.0"):GetLocale(childName, true)
+function child:PrefChanged()
+	local digit = child['db']['digits'] or 1
+	if(digit > 0) then
+		child['frm_digits'] = format("%%.%if", digit)
+	else
+		child['frm_digits'] = "%i"
+	end
+	child.events.PLAYER_AVG_ITEM_LEVEL_UPDATE()
+end
 local init = {
 	Setup = function(self)
 		local config = LibStub:GetLibrary("zzConfig")