subField = new ISOBinaryField(fieldNumber + maxField + 1, (byte[]) value);
} else if (value instanceof String) {
subField = new ISOField(fieldNumber + maxField + 1, (String) value);
} else if (value instanceof TagSequence) {
TagSequence subSequence = (TagSequence) tagValue;
subField = new ISOMsg(fieldNumber + maxField + 1);
subSequence.writeTo((ISOMsg) subField);
} else if (value instanceof ISOMsg) {
ISOMsgTagValue subSequence = (ISOMsgTagValue) tagValue;
subField = subSequence.getValue();
subField.setFieldNumber(fieldNumber + maxField + 1);