diff --git a/org.adempiere.base/src/org/compiere/model/GridField.java b/org.adempiere.base/src/org/compiere/model/GridField.java
index b4b81afc84..316c5919fb 100644
--- a/org.adempiere.base/src/org/compiere/model/GridField.java
+++ b/org.adempiere.base/src/org/compiere/model/GridField.java
@@ -371,12 +371,12 @@ public class GridField
 
 		//  Mandatory if displayed
 		return isDisplayed (checkContext);
-	}	//	isMandatory
-
-	/**
-	 *	Is parameter Editable - checks if parameter is Read Only
-	 *  @param checkContext if true checks Context
-	 *  @return true, if editable
+	}	//	isMandatory
+
+	/**
+	 *	Is parameter Editable - checks if parameter is Read Only
+	 *  @param checkContext if true checks Context
+	 *  @return true, if editable
 	 */
 	public boolean isEditablePara(boolean checkContext) {
 		if (checkContext && m_vo.ReadOnlyLogic.length() > 0)
@@ -454,10 +454,15 @@ public class GridField
 		{
 			boolean isAlwaysUpdatable = false;
 			if (m_vo.AlwaysUpdatableLogic.startsWith("@SQL=")) {
-				isAlwaysUpdatable = Evaluator.parseSQLLogic(m_vo.AlwaysUpdatableLogic, m_vo.ctx, m_vo.WindowNo,
+				isAlwaysUpdatable = Evaluator.parseSQLLogic(m_vo.AlwaysUpdatableLogic, ctx, m_vo.WindowNo,
 						m_vo.TabNo, m_vo.ColumnName);
 			} else {
-				isAlwaysUpdatable = Evaluator.evaluateLogic(this, m_vo.AlwaysUpdatableLogic);
+				Evaluatee evaluatee = new Evaluatee() {
+					public String get_ValueAsString(String variableName) {
+						return GridField.this.get_ValueAsString(ctx, variableName);
+					}
+				};
+				isAlwaysUpdatable = Evaluator.evaluateLogic(evaluatee, m_vo.AlwaysUpdatableLogic);
 				if (log.isLoggable(Level.FINEST))
 					log.finest(m_vo.ColumnName + " R/O(" + m_vo.AlwaysUpdatableLogic + ") => R/W-" + isAlwaysUpdatable);
 
@@ -466,9 +471,6 @@ public class GridField
 				return true;
 		}
 		
-		
-			
-
 		//check tab context
 		if (checkContext && getGridTab() != null &&
 			! "Y".equals(Env.getContext(Env.getCtx(), getWindowNo(), "_QUICK_ENTRY_MODE_")))
@@ -534,13 +536,18 @@ public class GridField
 		{
 			if (m_vo.ReadOnlyLogic.startsWith("@SQL="))
 			{
-				boolean retValue = !Evaluator.parseSQLLogic(m_vo.ReadOnlyLogic, m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, m_vo.ColumnName);
+				boolean retValue = !Evaluator.parseSQLLogic(m_vo.ReadOnlyLogic, ctx, m_vo.WindowNo, m_vo.TabNo, m_vo.ColumnName);
 				if (!retValue)
 					return false;
 			}
 			else
 			{
-				boolean retValue = !Evaluator.evaluateLogic(this, m_vo.ReadOnlyLogic);
+				Evaluatee evaluatee = new Evaluatee() {
+					public String get_ValueAsString(String variableName) {
+						return GridField.this.get_ValueAsString(ctx, variableName);
+					}
+				};
+				boolean retValue = !Evaluator.evaluateLogic(evaluatee, m_vo.ReadOnlyLogic);
 				if (log.isLoggable(Level.FINEST)) log.finest(m_vo.ColumnName + " R/O(" + m_vo.ReadOnlyLogic + ") => R/W-" + retValue);
 				if (!retValue)
 					return false;
@@ -1261,6 +1268,50 @@ public class GridField
 		return true;
 	}	//	isDisplayed
 
+	/**************************************************************************
+	 *	Is the Displayed Grid Column Visible ?
+	 *  @param checkContext - check environment (requires correct row position)
+	 *  @return true, if visible
+	 */
+	public boolean isDisplayedGrid (boolean checkContext)
+	{
+		return isDisplayedGrid(m_vo.ctx, checkContext);
+	}
+
+	/**************************************************************************
+	 *	Is the Displayed Grid Column Visible ?
+	 *  @param checkContext - check environment (requires correct row position)
+	 *  @return true, if visible
+	 */
+	public boolean isDisplayedGrid (final Properties ctx, boolean checkContext)
+	{
+		//  ** static content **
+		//  not displayed
+		if (!m_vo.IsDisplayedGrid)
+			return false;
+		//  no restrictions
+		if (m_vo.DisplayLogic.equals(""))
+			return true;
+
+		//  ** dynamic content **
+		if (checkContext)
+		{
+			if (m_vo.DisplayLogic.startsWith("@SQL=")) {
+				return Evaluator.parseSQLLogic(m_vo.DisplayLogic, ctx, m_vo.WindowNo, m_vo.TabNo, m_vo.ColumnName);
+			}
+			Evaluatee evaluatee = new Evaluatee() {
+				public String get_ValueAsString(String variableName) {
+					return GridField.this.get_ValueAsString(ctx, variableName);
+				}
+			};
+			boolean retValue = Evaluator.evaluateLogic(evaluatee, m_vo.DisplayLogic);
+			if (log.isLoggable(Level.FINEST)) log.finest(m_vo.ColumnName 
+				+ " (" + m_vo.DisplayLogic + ") => " + retValue);
+			return retValue;
+		}
+		return true;
+	}	//	isDisplayedGrid
+
 	/**
 	 * 	Get Variable Value (Evaluatee)
 	 *	@param variableName name
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/GridTabRowRenderer.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/GridTabRowRenderer.java
index 4199572dbe..e54520b1b6 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/GridTabRowRenderer.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/GridTabRowRenderer.java
@@ -327,6 +327,7 @@ public class GridTabRowRenderer implements RowRenderer<Object[]>, RowRendererExt
 		} else if (gridField.isHeading()) {
 			component = createInvisibleComponent();
 		} else if (gridField.getDisplayType() == DisplayType.Button) {
+			// Each row renderer --- ctx per row wise
 			GridRowCtx gridRowCtx = new GridRowCtx(Env.getCtx(), gridTab, rowIndex);
 			WButtonEditor editor = new WButtonEditor(gridField, rowIndex);
 			editor.setValue(gridTab.getValue(rowIndex, gridField.getColumnName()));
@@ -650,7 +651,7 @@ public class GridTabRowRenderer implements RowRenderer<Object[]>, RowRendererExt
 				}
 				
 				GridRowCtx ctx = new GridRowCtx(Env.getCtx(), gridTab, rowIndex);
-				if (! (gridPanelFields[i].isDisplayed(ctx, true) || gridPanelFields[i].isDisplayedGrid())){
+				if (!gridPanelFields[i].isDisplayedGrid(ctx, true)){
 					// IDEMPIERE-2253 
 					component.setVisible(false);
 				}
@@ -813,7 +814,7 @@ public class GridTabRowRenderer implements RowRenderer<Object[]>, RowRendererExt
 		            Properties ctx = isDetailPane() ? new GridRowCtx(Env.getCtx(), gridTab) 
 		            	: gridPanelFields[i].getVO().ctx;
 		            //check context
-					if (!gridPanelFields[i].isDisplayed(ctx, true)){
+					if (!gridPanelFields[i].isDisplayedGrid(ctx, true)){
 						// IDEMPIERE-2253 
 						editor.getComponent().setVisible(false);
 					}