diff --git a/examples/gno.land/r/leon/config/config.gno b/examples/gno.land/r/leon/config/config.gno
index bc800ec8263..88fa1914036 100644
--- a/examples/gno.land/r/leon/config/config.gno
+++ b/examples/gno.land/r/leon/config/config.gno
@@ -3,61 +3,58 @@ package config
 import (
 	"errors"
 	"std"
+
+	"gno.land/p/demo/avl"
+	"gno.land/p/demo/ownable"
+	"gno.land/p/demo/ufmt"
+	"gno.land/p/moul/md"
 )
 
 var (
-	main   std.Address // leon's main address
-	backup std.Address // backup address
+	configs = avl.NewTree()
+
+	OwnableMain   = ownable.NewWithAddress("g125em6arxsnj49vx35f0n0z34putv5ty3376fg5")
+	OwnableBackup = ownable.NewWithAddress("g125em6arxsnj49vx35f0n0z34putv5ty3376fg5")
 
-	ErrInvalidAddr  = errors.New("leon's config: invalid address")
 	ErrUnauthorized = errors.New("leon's config: unauthorized")
 )
 
-func init() {
-	main = "g125em6arxsnj49vx35f0n0z34putv5ty3376fg5"
-}
-
-func Address() std.Address {
-	return main
-}
+func AddConfig(name, lines string) {
+	if !IsAuthorized(std.PrevRealm().Addr()) {
+		panic(ErrUnauthorized)
+	}
 
-func Backup() std.Address {
-	return backup
+	configs.Set(name, lines) // allows overwrite
 }
 
-func SetAddress(a std.Address) error {
-	if !a.IsValid() {
-		return ErrInvalidAddr
+func RemoveConfig(name string) {
+	if !IsAuthorized(std.PrevRealm().Addr()) {
+		panic(ErrUnauthorized)
 	}
 
-	if err := checkAuthorized(); err != nil {
-		return err
+	if _, ok := configs.Remove(name); !ok {
+		panic("no config with that name")
 	}
+}
 
-	main = a
-	return nil
+func IsAuthorized(addr std.Address) bool {
+	return addr == OwnableMain.Owner() || addr == OwnableBackup.Owner()
 }
 
-func SetBackup(a std.Address) error {
-	if !a.IsValid() {
-		return ErrInvalidAddr
-	}
+func Render(_ string) (out string) {
+	out += md.H1("Leon's config Package")
 
-	if err := checkAuthorized(); err != nil {
-		return err
-	}
+	out += ufmt.Sprintf("Leon's main address: %s\n\n", OwnableMain.Owner().String())
+	out += ufmt.Sprintf("Leon's backup address: %s\n\n", OwnableBackup.Owner().String())
 
-	backup = a
-	return nil
-}
+	out += md.H2("Leon's configs")
 
-func checkAuthorized() error {
-	caller := std.PrevRealm().Addr()
-	isAuthorized := caller == main || caller == backup
+	configs.Iterate("", "", func(key string, value interface{}) bool {
+		out += ufmt.Sprintf("## %s\n\n", key)
+		out += ufmt.Sprintf("```\n%s\n```", value.(string))
 
-	if !isAuthorized {
-		return ErrUnauthorized
-	}
+		return false
+	})
 
-	return nil
+	return out
 }
diff --git a/examples/gno.land/r/leon/home/home.gno b/examples/gno.land/r/leon/home/home.gno
index cf33260cc6b..4e48659aa77 100644
--- a/examples/gno.land/r/leon/home/home.gno
+++ b/examples/gno.land/r/leon/home/home.gno
@@ -39,7 +39,7 @@ TODO import r/gh
 }
 
 func UpdatePFP(url, caption string) {
-	if !isAuthorized(std.PrevRealm().Addr()) {
+	if !config.IsAuthorized(std.PrevRealm().Addr()) {
 		panic(config.ErrUnauthorized)
 	}
 
@@ -48,7 +48,7 @@ func UpdatePFP(url, caption string) {
 }
 
 func UpdateAboutMe(col1, col2 string) {
-	if !isAuthorized(std.PrevRealm().Addr()) {
+	if !config.IsAuthorized(std.PrevRealm().Addr()) {
 		panic(config.ErrUnauthorized)
 	}
 
@@ -130,7 +130,3 @@ func renderMillipede() string {
 
 	return out
 }
-
-func isAuthorized(addr std.Address) bool {
-	return addr == config.Address() || addr == config.Backup()
-}