// Create an attribute map for the Long Description attribute.
AttributeMap attrMapLong = mdmDimLevelMemListMap.findOrCreateAttributeMap(chanLongDescAttr);
// Create an expression for the attribute map.
Expression lDescColExp = (Expression)SyntaxObject.fromSyntax(level.getTableColumnId(),metadataProvider);
attrMapLong.setExpression(lDescColExp);
i++;
}
}