diff --git a/src/emhass/utils.py b/src/emhass/utils.py
index 803aca12..ae4667a9 100644
--- a/src/emhass/utils.py
+++ b/src/emhass/utils.py
@@ -578,10 +578,10 @@ def build_params(params: dict, params_secrets: dict, options: dict, addon: int,
         params['retrieve_hass_conf']['days_to_retrieve'] = options.get('historic_days_to_retrieve',params['retrieve_hass_conf']['days_to_retrieve'])
         params['retrieve_hass_conf']['var_PV'] = options.get('sensor_power_photovoltaics',params['retrieve_hass_conf']['var_PV'])
         params['retrieve_hass_conf']['var_load'] = options.get('sensor_power_load_no_var_loads',params['retrieve_hass_conf']['var_load'])
-        params['retrieve_hass_conf']['load_negative'] = options.get('load_negative',params['retrieve_hass_conf']['load_negative'])
-        params['retrieve_hass_conf']['set_zero_min'] = options.get('set_zero_min',params['retrieve_hass_conf']['set_zero_min'])
-        params['retrieve_hass_conf']['var_replace_zero'] = options.get('sensor_power_photovoltaics',params['retrieve_hass_conf']['var_replace_zero'])
-        params['retrieve_hass_conf']['var_interp'] = options.get('sensor_power_photovoltaics',params['retrieve_hass_conf']['var_PV']), options.get('sensor_power_load_no_var_loads',params['retrieve_hass_conf']['var_load'])
+        params['retrieve_hass_conf']['load_negative'] = [options.get('load_negative',params['retrieve_hass_conf']['load_negative'])]
+        params['retrieve_hass_conf']['set_zero_min'] = [options.get('set_zero_min',params['retrieve_hass_conf']['set_zero_min'])]
+        params['retrieve_hass_conf']['var_replace_zero'] = [options.get('sensor_power_photovoltaics',params['retrieve_hass_conf']['var_replace_zero'])]
+        params['retrieve_hass_conf']['var_interp'] = [options.get('sensor_power_photovoltaics',params['retrieve_hass_conf']['var_PV']), options.get('sensor_power_load_no_var_loads',params['retrieve_hass_conf']['var_load'])]
         params['retrieve_hass_conf']['method_ts_round'] = options.get('method_ts_round',params['retrieve_hass_conf']['method_ts_round'])
         # Update params Secrets if specified
         params['params_secrets'] = params_secrets