diff --git a/core/oql/expression.class.inc.php b/core/oql/expression.class.inc.php
index 8b2e43e27..26efeb1d3 100644
--- a/core/oql/expression.class.inc.php
+++ b/core/oql/expression.class.inc.php
@@ -1972,7 +1972,15 @@ class ListExpression extends Expression
 		{
 			if ($oExpr instanceof VariableExpression)
 			{
-				$this->m_aExpressions[$idx] = $oExpr->GetAsScalar($aArgs);
+				$oVarExpr = $oExpr->GetAsScalar($aArgs);
+				if ($oVarExpr instanceof ListExpression)
+				{
+					$this->m_aExpressions = $oVarExpr->GetItems();
+				}
+				else
+				{
+					$this->m_aExpressions[$idx] = $oVarExpr;
+				}
 			}
 			else
 			{