diff --git a/scripts/config b/scripts/config
index bc1e6c6..b9e79f8 100644
--- a/scripts/config
+++ b/scripts/config
@@ -1,31 +1,64 @@
 #!/bin/bash
-
-# In most simple cases, you don't need a config script (or just to reload services). 
+# In simple cases, you don't need a config script. 
 
 # With a simple config_panel.toml, you can write in the app settings, in the 
-# upstream config file or replace complete files (logo ...).
+# upstream config file or replace complete files (logo ...) and restart services.
 
 # The config scripts allows you to go further, to handle specific cases 
 # (validation of several interdependent fields, specific getter/setter for a value,
-# pre-loading of config type .cube ).
+# display dynamic informations or choices, pre-loading of config type .cube... ).
 
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
+source /usr/share/yunohost/helpers
 
+ynh_abort_if_errors
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+final_path=$(ynh_app_setting_get $app final_path)
 
 #=================================================
 # SPECIFIC GETTERS FOR TOML SHORT KEY
 #=================================================
-get__user() {
-    if [ -s $final_path/keys/credentials ]
+
+get__amount() {
+    # Here we can imagine to have an API call to stripe to know the amount of donation during a month
+    local amount = 200
+
+    # It's possible to change some properties of the question by overriding it:
+    if [ $amount -gt 100 ]
     then
-        sed -n 1p $final_path/keys/credentials 
+    cat << EOF
+style: success
+value: $amount
+ask:
+  en: A lot of donation this month: **$amount €**
+EOF
+    else
+    cat << EOF
+style: danger
+value: $amount
+ask:
+  en: Not so much donation this month: $amount €
+EOF
     fi
 }
 
-get__passphrase() {
-    if [ -s $final_path/keys/credentials ]
+get__prices() {
+    local prices = "$(grep "DONATION\['" "$final_path/settings.py" | sed -r "s@^DONATION\['([^']*)'\]\['([^']*)'\] = '([^']*)'@\1/\2/\3@g" | sed -z 's/\n/,/g;s/,$/\n/')"
+    if [ "$prices" == "," ];
     then
-        sed -n 2p $final_path/keys/credentials 
+        # Return YNH_NULL if you prefer to not return a value at all.
+        echo YNH_NULL
+    else
+        echo $prices
     fi
 }
 
@@ -33,42 +66,37 @@ get__passphrase() {
 #=================================================
 # SPECIFIC VALIDATORS FOR TOML SHORT KEYS
 #=================================================
-validate__user() {
-    [[ -n "$passphrase" && -z "$user" ]] &&
-        echo 'A Username is needed when you suggest a Password'
-}
+validate__publishable_key() {
 
-validate__passphrase() {
-    [[ -n "$user" && -z "$passphrase" ]] &&
-        echo 'A Password is needed when you suggest a Username'
+    # We can imagine here we test if the key is really a publisheable key
+    (is_secret_key $publishable_key) &&
+        echo 'This key seems to be a secret key'
 }
 
 #=================================================
 # SPECIFIC SETTERS FOR TOML SHORT KEYS
 #=================================================
-set__user() {
-    if [ -z "$user" ]
-    then
-        echo "$user\n$passphrase" > $final_path/keys/credentials 
-    else
-        echo "" > $final_path/keys/credentials
-    fi
-}
+set__prices() {
 
-set__passphrase() {
-    :
-}
+    #---------------------------------------------
+    # IMPORTANT: setter are trigger only if a change is detected
+    #---------------------------------------------
+    for price in $(echo $prices | sed "s/,/ /"); do
+        frequency=$(echo $price | cut -d/ -f1)
+        currency=$(echo $price | cut -d/ -f2)
+        price_id=$(echo $price | cut -d/ -f3)
+        sed "d/DONATION\['$frequency'\]\['$currency'\]" "$final_path/settings.py"
 
-
-#=================================================
-# OVERWRITING APPLY STEP 
-#=================================================
-ynh_panel_apply() {
+        echo "DONATION['$frequency']['$currency'] = '$price_id'" >> "$final_path/settings.py"
+    done
     
-    _ynh_panel_apply
-
-    # Reload app service
-    systemctl reload APP
-
+    #---------------------------------------------
+    # IMPORTANT: to be able to upgrade properly, you have to saved the value in settings too
+    #---------------------------------------------
+    ynh_app_setting_set $app prices $prices
 }
 
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+ynh_app_config_run $1