Is there a MULTILINE support for hyperscan?

[apismensky]

HS_FLAG_MULTILINE does not seem to have any impact in java API.

public class Validator {

    private static final EnumSet<ExpressionFlag> flags = EnumSet.of(ExpressionFlag.CASELESS, ExpressionFlag.PREFILTER, ExpressionFlag.MULTILINE);
    private static boolean isRegexValidHyperscan(String regex) {
        Expression expression = new Expression(regex, flags);
        Expression.ValidationResult result = expression.validate();
        if (result.getErrorMessage() != null) System.out.println(result.getErrorMessage());
        return result.isValid();
    }

    private static boolean isRegexValidJava(String regex) {
        try {
            Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
            return true;
        } catch (PatternSyntaxException e) {
            e.printStackTrace();
            return false;
        }
    }


    public static void main(String[] args) throws Exception {
        String regex = "\\d{13}^[A-Z]{1}";

        boolean regexValidHyperscan = isRegexValidHyperscan(regex);
        System.out.println(regex + " valid by hyperscan: " +  regexValidHyperscan);

        boolean regexValidJava = isRegexValidJava(regex);
        System.out.println(regex + " valid by java: " +  regexValidJava);
    }
}

produces

Embedded start anchors not supported.
\d{13}^[A-Z]{1} valid by hyperscan: false
\d{13}^[A-Z]{1} valid by java: true

@gliwka from what I read it should from the doc it should ve a valid regex, right?