diff --git a/changelog b/changelog
index 54639c8..a6e53a2 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,6 @@
+0.9.0a9:
+  I forgot to bump the revision
+  Fix set availability service
 0.9.0a8:
   fix upgrade issue #2, use config functions not hard coded directory locations
 0.9.0a7:
diff --git a/custom_components/virtual/__init__.py b/custom_components/virtual/__init__.py
index dc3e40d..79bd931 100644
--- a/custom_components/virtual/__init__.py
+++ b/custom_components/virtual/__init__.py
@@ -29,7 +29,7 @@
 from .cfg import BlendedCfg, UpgradeCfg
 
 
-__version__ = '0.9.0a7'
+__version__ = '0.9.0a9'
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -144,7 +144,8 @@ async def async_virtual_service_set_available(call) -> None:
     if not hasattr(hass.data[COMPONENT_SERVICES], COMPONENT_DOMAIN):
         _LOGGER.debug("installing handlers")
         hass.data[COMPONENT_SERVICES][COMPONENT_DOMAIN] = 'installed'
-        hass.services.async_register(COMPONENT_DOMAIN, SERVICE_AVAILABILE, async_virtual_service_set_available)
+        hass.services.async_register(COMPONENT_DOMAIN, SERVICE_AVAILABILE,
+                                     async_virtual_service_set_available, schema=SERVICE_SCHEMA)
 
     return True
 
@@ -194,13 +195,11 @@ def get_entity_from_domain(hass, domain, entity_id):
 
 
 async def async_virtual_set_availability_service(hass, call):
-    entities = call.data['entity_id']
     value = call.data['value']
-
     if type(value) is not bool:
         value = bool(util.strtobool(value))
 
-    for entity_id in entities:
+    for entity_id in call.data['entity_id']:
         domain = entity_id.split(".")[0]
         _LOGGER.info("{} set_avilable(value={})".format(entity_id, value))
         get_entity_from_domain(hass, domain, entity_id).set_available(value)
diff --git a/custom_components/virtual/manifest.json b/custom_components/virtual/manifest.json
index 2e0ed91..99dc292 100644
--- a/custom_components/virtual/manifest.json
+++ b/custom_components/virtual/manifest.json
@@ -8,5 +8,5 @@
   "documentation": "https://github.com/twrecked/hass-virtual/blob/master/README.md",
   "iot_class": "local_push",
   "issue_tracker": "https://github.com/twrecked/hass-virtual/issues",
-  "version": "0.9.0a6"
+  "version": "0.9.0a9"
 }