String escaped = expressionString.replaceAll("\\\\","\\\\\\\\");\r
escaped = escaped.replaceAll(",","\\\\,");\r
escaped = escaped.replaceAll("\\|", "\\\\|");\r
String escaped = expressionString.replaceAll("\\\\","\\\\\\\\");\r
escaped = escaped.replaceAll(",","\\\\,");\r
escaped = escaped.replaceAll("\\|", "\\\\|");\r