diff --git a/base/src/org/adempiere/util/ProcessUtil.java b/base/src/org/adempiere/util/ProcessUtil.java
index b40206ab17..7614eb6065 100644
--- a/base/src/org/adempiere/util/ProcessUtil.java
+++ b/base/src/org/adempiere/util/ProcessUtil.java
@@ -161,16 +161,16 @@ public final class ProcessUtil {
 			MRule.setContext(engine, ctx, 0);  // no window
 			// now add the process parameters to the engine 
 			// Parameter context are ___
-			engine.put("___Ctx", ctx);
+			engine.put("$$$Ctx", ctx);
 			if (trx == null)
 				trx = Trx.get(pi.getTitle()+"_"+pi.getAD_PInstance_ID(), true);
-			engine.put("___Trx", trx);
-			engine.put("___TrxName", trx.getTrxName());
-			engine.put("___Record_ID", pi.getRecord_ID());
-			engine.put("___AD_Client_ID", pi.getAD_Client_ID());
-			engine.put("___AD_User_ID", pi.getAD_User_ID());
-			engine.put("___AD_PInstance_ID", pi.getAD_PInstance_ID());
-			engine.put("___Table_ID", pi.getTable_ID());
+			engine.put("$$$Trx", trx);
+			engine.put("$$$TrxName", trx.getTrxName());
+			engine.put("$$$Record_ID", pi.getRecord_ID());
+			engine.put("$$$AD_Client_ID", pi.getAD_Client_ID());
+			engine.put("$$$AD_User_ID", pi.getAD_User_ID());
+			engine.put("$$$AD_PInstance_ID", pi.getAD_PInstance_ID());
+			engine.put("$$$Table_ID", pi.getTable_ID());
 			// Add process parameters
 			ProcessInfoParameter[] para = pi.getParameter();
 			if (para == null) {
@@ -178,31 +178,31 @@ public final class ProcessUtil {
 				para = pi.getParameter();
 			}
 			if (para != null) {
-				engine.put("___Parameter", pi.getParameter());
+				engine.put("$$$Parameter", pi.getParameter());
 				for (int i = 0; i < para.length; i++)
 				{
 					String name = para[i].getParameterName();
 					if (para[i].getParameter_To() == null) {
 						Object value = para[i].getParameter();
 						if (name.endsWith("_ID") && (value instanceof BigDecimal))
-							engine.put("___" + name, ((BigDecimal)value).intValue());
+							engine.put("$$$" + name, ((BigDecimal)value).intValue());
 						else
-							engine.put("___" + name, value);
+							engine.put("$$$" + name, value);
 					} else {
 						Object value1 = para[i].getParameter();
 						Object value2 = para[i].getParameter_To();
 						if (name.endsWith("_ID") && (value1 instanceof BigDecimal))
-							engine.put("___" + name + "1", ((BigDecimal)value1).intValue());
+							engine.put("$$$" + name + "1", ((BigDecimal)value1).intValue());
 						else
-							engine.put("___" + name + "1", value1);
+							engine.put("$$$" + name + "1", value1);
 						if (name.endsWith("_ID") && (value2 instanceof BigDecimal))
-							engine.put("___" + name + "2", ((BigDecimal)value2).intValue());
+							engine.put("$$$" + name + "2", ((BigDecimal)value2).intValue());
 						else
-							engine.put("___" + name + "2", value2);
+							engine.put("$$$" + name + "2", value2);
 					}
 				}
 			}
-			engine.put("___ProcessInfo", pi);
+			engine.put("$$$ProcessInfo", pi);
 		
 			msg = engine.eval(rule.getScript()).toString();
 			//transaction should rollback if there are error in process
diff --git a/base/src/org/compiere/model/GridTab.java b/base/src/org/compiere/model/GridTab.java
index cfb12067d0..5a86fc0cc9 100644
--- a/base/src/org/compiere/model/GridTab.java
+++ b/base/src/org/compiere/model/GridTab.java
@@ -2471,11 +2471,11 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 				MRule.setContext(engine, m_vo.ctx, m_vo.WindowNo);
 				// now add the callout parameters windowNo, tab, field, value, oldValue to the engine 
 				// Parameter context are ___
-				engine.put("___WindowNo", m_vo.WindowNo);
-				engine.put("___Tab", this);
-				engine.put("___Field", field);
-				engine.put("___Value", value);
-				engine.put("___OldValue", oldValue);
+				engine.put("$$$WindowNo", m_vo.WindowNo);
+				engine.put("$$$Tab", this);
+				engine.put("$$$Field", field);
+				engine.put("$$$Value", value);
+				engine.put("$$$OldValue", oldValue);
 
 				try 
 				{
diff --git a/base/src/org/compiere/model/MRule.java b/base/src/org/compiere/model/MRule.java
index 84b15033be..1d562fa328 100644
--- a/base/src/org/compiere/model/MRule.java
+++ b/base/src/org/compiere/model/MRule.java
@@ -283,13 +283,13 @@ public class MRule extends X_AD_Rule
 		String k = m_windowNo + "|";
 		if (key.startsWith(k))
 		{
-			String retValue = "_" + key.substring(k.length());
-			retValue = Util.replace(retValue, "|", "_");
+			String retValue = "$" + key.substring(k.length());
+			retValue = Util.replace(retValue, "|", "$");
 			return retValue;
 		}
 		else
 		{
-			String retValue = Util.replace(key, "#", "__");
+			String retValue = Util.replace(key, "#", "$$");
 			return retValue;
 		}
 	}   //  convertKey
diff --git a/base/src/org/compiere/model/ModelValidationEngine.java b/base/src/org/compiere/model/ModelValidationEngine.java
index e44bfb3d74..906fce58b2 100644
--- a/base/src/org/compiere/model/ModelValidationEngine.java
+++ b/base/src/org/compiere/model/ModelValidationEngine.java
@@ -213,11 +213,11 @@ public class ModelValidationEngine
 						MRule.setContext(engine, Env.getCtx(), 0);  // no window
 						// now add the process parameters to the engine 
 						// Parameter context are ___
-						engine.put("___Ctx", Env.getCtx());
-						engine.put("___AD_Client_ID", AD_Client_ID);
-						engine.put("___AD_Org_ID", AD_Org_ID);
-						engine.put("___AD_Role_ID", AD_Role_ID);
-						engine.put("___AD_User_ID", AD_User_ID);
+						engine.put("$$$Ctx", Env.getCtx());
+						engine.put("$$$AD_Client_ID", AD_Client_ID);
+						engine.put("$$$AD_Org_ID", AD_Org_ID);
+						engine.put("$$$AD_Role_ID", AD_Role_ID);
+						engine.put("$$$AD_User_ID", AD_User_ID);
 					
 						error = engine.eval(loginRule.getScript()).toString();
 					} catch (Exception e) {
diff --git a/base/src/org/compiere/model/Scriptlet.java b/base/src/org/compiere/model/Scriptlet.java
index 771922a108..50f59d0c0c 100644
--- a/base/src/org/compiere/model/Scriptlet.java
+++ b/base/src/org/compiere/model/Scriptlet.java
@@ -349,13 +349,13 @@ public class Scriptlet
 		String k = m_windowNo + "|";
 		if (key.startsWith(k))
 		{
-			String retValue = "_" + key.substring(k.length());
-			retValue = Util.replace(retValue, "|", "_");
+			String retValue = "$" + key.substring(k.length());
+			retValue = Util.replace(retValue, "|", "$");
 			return retValue;
 		}
 		else
 		{
-			String retValue = Util.replace(key, "#", "__");
+			String retValue = Util.replace(key, "#", "$$");
 			return retValue;
 		}
 	}   //  convertKey