Form validation regression

    <item id="9">
        <c:ref>telephoneNumber</c:ref>
        <help>Mobile Telephone Number</help>
        <validation>
            <server>
                <expression>
                    <trace>true</trace>
                    <script xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:c="http://midpoint.evolveum.com/xml/ns/public/common/common-3" xsi:type="c:ScriptExpressionEvaluatorType">
                        <code>
                        import java.util.regex.Matcher
                        import java.util.regex.Pattern
                        import com.evolveum.midpoint.schema.result.OperationResult
                        import com.evolveum.midpoint.schema.result.OperationResultStatus
             
                        if (input == null) {
                            return null
                        }
             
                        match = (input ==~ "^555-[0-9]{4}\$")
                   if (match) {
                          return null
                        }
             
                        result = new OperationResult("Validate telephone number");
                        result.setMessage("Telephone number must be 555-xxxx");
                        result.setStatus(OperationResultStatus.FATAL_ERROR)
             
                        return result.createOperationResultType();
             
                   </code>
                    </script>
                </expression>
            </server>
        </validation>
    </item>