diff --git a/migration/360lts-release/oracle/831_IDEMPIERE-177_Window_Customization.sql b/migration/360lts-release/oracle/831_IDEMPIERE-177_Window_Customization.sql
new file mode 100644
index 0000000000..0d5d416222
--- /dev/null
+++ b/migration/360lts-release/oracle/831_IDEMPIERE-177_Window_Customization.sql
@@ -0,0 +1,90 @@
+-- Apr 4, 2012 10:13:06 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_DATE('2012-04-04 10:13:06','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6396
+;
+
+-- Apr 4, 2012 10:13:09 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Win MODIFY Name NVARCHAR2(60) DEFAULT NULL 
+;
+
+-- Apr 4, 2012 10:13:10 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Win MODIFY Name NULL
+;
+
+-- Apr 4, 2012 10:13:27 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_DATE('2012-04-04 10:13:27','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6395
+;
+
+-- Apr 4, 2012 10:18:27 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_DATE('2012-04-04 10:18:27','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6381
+;
+
+-- Apr 4, 2012 10:18:29 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Tab MODIFY Name NVARCHAR2(60) DEFAULT NULL 
+;
+
+-- Apr 4, 2012 10:18:30 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Tab MODIFY Name NULL
+;
+
+-- Apr 4, 2012 10:18:47 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_DATE('2012-04-04 10:18:47','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6380
+;
+
+-- Apr 4, 2012 10:26:05 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET AD_Val_Rule_ID=158,Updated=TO_DATE('2012-04-04 10:26:05','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=13425
+;
+
+-- Apr 4, 2012 10:26:36 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Field MODIFY DisplayLogic NVARCHAR2(2000) DEFAULT NULL
+;
+
+-- Apr 4, 2012 10:26:36 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Field MODIFY DisplayLogic NULL
+;
+
+-- Apr 4, 2012 10:29:08 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET DefaultValue=NULL,Updated=TO_DATE('2012-04-04 10:29:08','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6351
+;
+
+-- Apr 4, 2012 10:29:11 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Field MODIFY DisplayLogic NVARCHAR2(2000) DEFAULT NULL 
+;
+
+-- Apr 4, 2012 10:44:18 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_DATE('2012-04-04 10:44:18','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6346
+;
+
+-- Apr 4, 2012 10:44:21 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Field MODIFY Name NVARCHAR2(60) DEFAULT NULL 
+;
+
+-- Apr 4, 2012 10:44:21 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+ALTER TABLE AD_UserDef_Field MODIFY Name NULL
+;
+
+-- Apr 4, 2012 10:44:36 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_DATE('2012-04-04 10:44:36','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6345
+;
+
+UPDATE AD_System
+  SET LastMigrationScriptApplied='831_IDEMPIERE-177_Window_Customization.sql'
+WHERE LastMigrationScriptApplied<'831_IDEMPIERE-177_Window_Customization.sql'
+   OR LastMigrationScriptApplied IS NULL
+;
diff --git a/migration/360lts-release/postgresql/831_IDEMPIERE-177_Window_Customization.sql b/migration/360lts-release/postgresql/831_IDEMPIERE-177_Window_Customization.sql
new file mode 100644
index 0000000000..36c589473a
--- /dev/null
+++ b/migration/360lts-release/postgresql/831_IDEMPIERE-177_Window_Customization.sql
@@ -0,0 +1,75 @@
+-- Apr 4, 2012 10:13:06 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_TIMESTAMP('2012-04-04 10:13:06','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6396
+;
+
+-- Apr 4, 2012 10:13:09 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_win','Name','VARCHAR(60)',null,'NULL')
+;
+
+-- Apr 4, 2012 10:13:10 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_win','Name',null,'NULL',null)
+;
+
+-- Apr 4, 2012 10:13:27 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_TIMESTAMP('2012-04-04 10:13:27','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6395
+;
+
+-- Apr 4, 2012 10:18:27 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_TIMESTAMP('2012-04-04 10:18:27','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6381
+;
+
+-- Apr 4, 2012 10:18:29 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_tab','Name','VARCHAR(60)',null,'NULL')
+;
+
+-- Apr 4, 2012 10:18:30 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_tab','Name',null,'NULL',null)
+;
+
+-- Apr 4, 2012 10:18:47 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_TIMESTAMP('2012-04-04 10:18:47','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6380
+;
+
+-- Apr 4, 2012 10:29:08 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET DefaultValue=NULL,Updated=TO_TIMESTAMP('2012-04-04 10:29:08','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6351
+;
+
+-- Apr 4, 2012 10:29:11 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_field','DisplayLogic','VARCHAR(2000)',null,'NULL')
+;
+
+-- Apr 4, 2012 10:44:18 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='N',Updated=TO_TIMESTAMP('2012-04-04 10:44:18','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6346
+;
+
+-- Apr 4, 2012 10:44:21 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_field','Name','VARCHAR(60)',null,'NULL')
+;
+
+-- Apr 4, 2012 10:44:21 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+INSERT INTO t_alter_column values('ad_userdef_field','Name',null,'NULL',null)
+;
+
+-- Apr 4, 2012 10:44:36 AM COT
+-- IDEMPIERE-177 Complete Window Customization functionality
+UPDATE AD_Column SET IsIdentifier='Y', SeqNo=1,Updated=TO_TIMESTAMP('2012-04-04 10:44:36','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=6345
+;
+
+UPDATE AD_System
+  SET LastMigrationScriptApplied='831_IDEMPIERE-177_Window_Customization.sql'
+WHERE LastMigrationScriptApplied<'831_IDEMPIERE-177_Window_Customization.sql'
+   OR LastMigrationScriptApplied IS NULL
+;
diff --git a/org.adempiere.base/src/org/compiere/model/GridFieldVO.java b/org.adempiere.base/src/org/compiere/model/GridFieldVO.java
index 5eb1868686..d322b88c47 100644
--- a/org.adempiere.base/src/org/compiere/model/GridFieldVO.java
+++ b/org.adempiere.base/src/org/compiere/model/GridFieldVO.java
@@ -221,7 +221,7 @@ public class GridFieldVO implements Serializable
 				vo.IsSameLine = userDef.isSameLine();
 				vo.IsUpdateable = userDef.isUpdateable();
 				if (userDef.getDisplayLength() > 0)
-				vo.DisplayLength = userDef.getDisplayLength();
+					vo.DisplayLength = userDef.getDisplayLength();
 				if (userDef.getDisplayLogic() != null)
 					vo.DisplayLogic = userDef.getDisplayLogic();
 				if (userDef.getDefaultValue() != null)
diff --git a/org.adempiere.base/src/org/compiere/model/GridTabVO.java b/org.adempiere.base/src/org/compiere/model/GridTabVO.java
index 0ba49db8f8..3efeee92e9 100644
--- a/org.adempiere.base/src/org/compiere/model/GridTabVO.java
+++ b/org.adempiere.base/src/org/compiere/model/GridTabVO.java
@@ -104,7 +104,7 @@ public class GridTabVO implements Evaluatee, Serializable
 			// FR IDEMPIERE-177
 			MUserDefTab userDef = MUserDefTab.get(vo.ctx, vo.AD_Tab_ID, vo.AD_Window_ID);
 			vo.Name = rs.getString("Name");
-			if (userDef != null)
+			if (userDef != null && userDef.getName() != null)
 				vo.Name = userDef.getName();
 			Env.setContext(vo.ctx, vo.WindowNo, vo.TabNo, GridTab.CTX_Name, vo.Name);
 
@@ -163,7 +163,7 @@ public class GridTabVO implements Evaluatee, Serializable
 			}
 			if (rs.getString("IsReadOnly").equals("Y"))
 				vo.IsReadOnly = true;
-			if (userDef != null)
+			if (userDef != null && userDef.get_ValueAsString("ReadOnlyLogic") != null)
 				vo.IsReadOnly = userDef.isReadOnly();
 			vo.ReadOnlyLogic = rs.getString("ReadOnlyLogic");
 			if (userDef != null)
diff --git a/org.adempiere.base/src/org/compiere/model/MUserDefWin.java b/org.adempiere.base/src/org/compiere/model/MUserDefWin.java
index 21d2df1e57..f9d934ed24 100644
--- a/org.adempiere.base/src/org/compiere/model/MUserDefWin.java
+++ b/org.adempiere.base/src/org/compiere/model/MUserDefWin.java
@@ -180,7 +180,7 @@ public class MUserDefWin extends X_AD_UserDef_Win
 				}
 			}
 			// prefer if related to current login language
-			if (weight[i] > -1 && candidates[i].getAD_Language().equalsIgnoreCase(Env.getAD_Language(ctx))) {
+			if (weight[i] > -1 && Env.getAD_Language(ctx).equalsIgnoreCase(candidates[i].getAD_Language())) {
 				weight[i] = weight[i] + 8;
 			}
 			// others are implicit