diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index e59bfe85d6..980b2a5a49 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -14343,7 +14343,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     case "5":
                         ret.Add(new LSL_Key(land.GlobalID.ToString()));
                         break;
-                    case "20":
+                    case "64":
                         ret.Add(new LSL_Integer(land.Dwell));
                         break;
                     default:
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
index ab3a7688c3..62da221cb3 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
@@ -1600,7 +1600,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             return 0.0f;
         }
 
-        public int osGetParcelDwell(LSL_Vector pos)
+        public LSL_Integer osGetParcelDwell(LSL_Vector pos)
         {
             LandData land = World.GetLandData(pos);
             if (land != null)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
index 5d964b87e2..7c5ced8013 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
@@ -260,7 +260,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
         LSL_Float osGetWindParam(string plugin, string param);
 
         // Parcel commands
-        int osGetParcelDwell(vector pos);
+        LSL_Integer osGetParcelDwell(vector pos);
         void osParcelJoin(vector pos1, vector pos2);
         void osParcelSubdivide(vector pos1, vector pos2);
         void osSetParcelDetails(vector pos, LSL_List rules);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index 371460a752..f93cea8274 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -35,7 +35,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
     public partial class ScriptBaseClass
     {
         // SCRIPTS CONSTANTS
-        public static readonly LSLInteger OS_APIVERSION = 4;
+        public static readonly LSLInteger OS_APIVERSION = 5;
 
         public static readonly LSLInteger TRUE = 1;
         public static readonly LSLInteger FALSE = 0;
@@ -721,7 +721,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         // constants for llGetParcelDetails
         public const int PARCEL_DETAILS_NAME = 0;
         public const int PARCEL_DETAILS_DESC = 1;
-        public const int PARCEL_DETAILS_DWELL = 20;
         public const int PARCEL_DETAILS_OWNER = 2;
         public const int PARCEL_DETAILS_GROUP = 3;
         public const int PARCEL_DETAILS_AREA = 4;
@@ -729,6 +728,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public const int PARCEL_DETAILS_SEE_AVATARS = 6;
         public const int PARCEL_DETAILS_ANY_AVATAR_SOUNDS = 7;
         public const int PARCEL_DETAILS_GROUP_SOUNDS = 8;
+        // constants for llGetParcelDetails os specific
+        public const int PARCEL_DETAILS_DWELL = 64;
 
         //osSetParcelDetails
         public const int PARCEL_DETAILS_CLAIMDATE = 10;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
index abdf0df5d5..6a70305702 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
@@ -116,7 +116,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
             return m_OSSL_Functions.osGetWindParam(plugin, param);
         }
 
-        public int osGetParcelDwell(vector pos)
+        public LSL_Integer osGetParcelDwell(vector pos)
         {
             return m_OSSL_Functions.osGetParcelDwell(pos);
         }
diff --git a/bin/ScriptSyntax.xml b/bin/ScriptSyntax.xml
index 2282adaea1..34cd1cc8b8 100644
--- a/bin/ScriptSyntax.xml
+++ b/bin/ScriptSyntax.xml
@@ -1,4 +1,4 @@
-24121ec8-c0a3-099d-8d83-64feaa32418c
+d2556181-baf5-e5b9-c8ec-99eda597b9f6
 <llsd><map><key>llsd-lsl-syntax-version</key><integer>2</integer>
 <key>controls</key>
 <map>
@@ -1513,7 +1513,7 @@
  </map>
  <key>OS_APIVERSION</key><map>
   <key>type</key><string>integer</string>
-  <key>value</key><string>4</string>
+  <key>value</key><string>5</string>
  </map>
  <key>OS_ATTACH_MSG_ALL</key><map>
   <key>type</key><string>integer</string>
@@ -1665,6 +1665,10 @@
   <key>type</key><string>integer</string>
   <key>value</key><string>1</string>
  </map>
+ <key>PARCEL_DETAILS_DWELL</key><map>
+  <key>type</key><string>integer</string>
+  <key>value</key><string>64</string>
+ </map>
  <key>PARCEL_DETAILS_GROUP</key><map>
   <key>type</key><string>integer</string>
   <key>value</key><string>3</string>
@@ -3017,6 +3021,10 @@
   <key>type</key><string>integer</string>
   <key>value</key><string>1</string>
  </map>
+ <key>VEHICLE_FLAG_NO_FLY_UP</key><map>
+  <key>type</key><string>integer</string>
+  <key>value</key><string>1</string>
+ </map>
  <key>VEHICLE_FLAG_NO_X</key><map>
   <key>type</key><string>integer</string>
   <key>value</key><string>1024</string>
@@ -6665,6 +6673,13 @@
    <map><key>name</key><map><key>type</key><string>string</string></map></map>
   </array>
  </map>
+ <key>osGetParcelDwell</key>
+ <map>
+  <key>return</key><string>integer</string>
+  <key>arguments</key><array>
+   <map><key>pos</key><map><key>type</key><string>vector</string></map></map>
+  </array>
+ </map>
  <key>osGetPhysicsEngineName</key>
  <map>
   <key>return</key><string>string</string>
@@ -7581,7 +7596,6 @@
   <key>arguments</key><array>
    <map><key>src</key><map><key>type</key><string>string</string></map></map>
    <map><key>start</key><map><key>type</key><string>integer</string></map></map>
-   <map><key>length</key><map><key>type</key><string>integer</string></map></map>
   </array>
  </map>
  <key>osStringSubString</key>
@@ -7590,6 +7604,7 @@
   <key>arguments</key><array>
    <map><key>src</key><map><key>type</key><string>string</string></map></map>
    <map><key>start</key><map><key>type</key><string>integer</string></map></map>
+   <map><key>length</key><map><key>type</key><string>integer</string></map></map>
   </array>
  </map>
  <key>osSunGetParam</key>
@@ -7619,6 +7634,8 @@
  <map>
   <key>arguments</key><array>
    <map><key>agent</key><map><key>type</key><string>string</string></map></map>
+   <map><key>regionX</key><map><key>type</key><string>integer</string></map></map>
+   <map><key>regionY</key><map><key>type</key><string>integer</string></map></map>
    <map><key>position</key><map><key>type</key><string>vector</string></map></map>
    <map><key>lookat</key><map><key>type</key><string>vector</string></map></map>
   </array>
@@ -7627,8 +7644,6 @@
  <map>
   <key>arguments</key><array>
    <map><key>agent</key><map><key>type</key><string>string</string></map></map>
-   <map><key>regionX</key><map><key>type</key><string>integer</string></map></map>
-   <map><key>regionY</key><map><key>type</key><string>integer</string></map></map>
    <map><key>position</key><map><key>type</key><string>vector</string></map></map>
    <map><key>lookat</key><map><key>type</key><string>vector</string></map></map>
   </array>