diff --git a/ngcp/rp.lua b/ngcp/rp.lua
index e5fd1eb..59a604d 100644
--- a/ngcp/rp.lua
+++ b/ngcp/rp.lua
@@ -63,40 +63,48 @@ NGCPRealPrefs_MT.__tostring = function ()
         local xavp = {
             peer  = NGCPPeerPrefs:xavp(level),
         }
-        local real_keys = {}
-        local value
+        local peer_values = {}
+        local values = sr.xavp.get(xavp.peer.name, 0, 0)
         for _,v in pairs(keys) do
-            value = xavp.peer(v)
+            local value = values[v]
             if value then
-                table.add(real_keys, v)
+                peer_values[v] = value
             end
         end
-        return real_keys
+        local peer_keys = {}
+        for k,v in pairs(peer_values) do
+            table.insert(peer_keys, k)
+            xavp.peer(k, v)
+        end
+        return peer_keys
     end
 
     function NGCPRealPrefs:_usr_load(level, keys)
-        local _,v
+        local _,v,k
         local xavp = {
-            real = NGCPRealPrefs:xavp(level),
+            real = NGCPRealPrefs:xavp(level),  
             dom  = NGCPDomainPrefs:xavp(level),
             usr  = NGCPUserPrefs:xavp(level)
         }
-        local real_keys = {}
-        local value
+        local real_values = {}
+        local dom_values = sr.xavp.get(xavp.dom.name, 0, 0)
+        local usr_values = sr.xavp.get(xavp.usr.name, 0, 0)
         for _,v in pairs(keys) do
-            value = xavp.usr(v)
+            local value = usr_values[v]
             if not value then
-                value = xavp.dom(v)
-                --sr.log("info", string.format("key:%s value:%s from domain", v, value))
+                value = dom_values[v]
             end
             if value then
-                table.add(real_keys, v)
-                --sr.log("info", string.format("key:%s value:%s", v, value))
-                xavp.real(v, value)
+                real_values[v] = value
             else
                 sr.log("err", string.format("key:%s not in user or domain", v))
             end
         end
+        local real_keys = {}
+        for k,v in pairs(real_values) do
+            table.insert(real_keys, k)
+            xavp.real(k, v)
+        end
         return real_keys
     end
 
diff --git a/ngcp/xavp.lua b/ngcp/xavp.lua
index f02eedf..b761b8a 100644
--- a/ngcp/xavp.lua
+++ b/ngcp/xavp.lua
@@ -38,12 +38,25 @@ NGCPXAvp_MT = {
                 return sr.pv.get(id)
             elseif type(value) == "number" then
                 table.add(t.keys, key)
-                sr.log("dbg", string.format("seti: [%s]:%d", id, value))
+                --sr.log("dbg", string.format("seti: [%s]:%d", id, value))
                 sr.pv.seti(id, value)
             elseif type(value) == "string" then
                 table.add(t.keys, key)
-                sr.log("dbg", string.format("sets: [%s]:%s", id, value))
+                --sr.log("dbg", string.format("sets: [%s]:%s", id, value))
                 sr.pv.sets(id, value)
+            elseif type(value) == "table" then
+                table.add(t.keys, key)
+                local i, v
+                for i = #value, 1, -1 do
+                    v = value[i]
+                    if type(v) == "number" then
+                        sr.pv.seti(id, v)
+                    elseif type(v) == "string" then
+                        sr.pv.sets(id, v)
+                    else
+                        error("unknown type: %s", type(v))
+                    end
+                end
             else
                 error("value is not a number or string")
             end
diff --git a/tests/ngcp_rp.lua b/tests/ngcp_rp.lua
index aecca33..0080d54 100644
--- a/tests/ngcp_rp.lua
+++ b/tests/ngcp_rp.lua
@@ -130,7 +130,7 @@ TestNGCPRealPrefs = {} --class
         xavp.user("dos",2)
         assertEquals(sr.pv.get("$xavp(caller_usr_prefs=>dos)"),2)
         local real_keys = self.real:caller_usr_load(keys)
-        assertEquals(real_keys, keys)
+        assertItemsEquals(real_keys, keys)
         assertEquals(xavp.real("uno"),1)
         assertEquals(xavp.real("dos"),2)
     end
@@ -163,7 +163,7 @@ TestNGCPRealPrefs = {} --class
         xavp.user("dos",2)
         assertEquals(sr.pv.get("$xavp(callee_usr_prefs=>dos)"),2)
         local real_keys = self.real:callee_usr_load(keys)
-        assertEquals(real_keys, keys)
+        assertItemsEquals(real_keys, keys)
         assertEquals(xavp.real("uno"),1)
         assertEquals(xavp.real("dos"),2)
     end