[ Version ( since = "0.7.0" ) ]
public void set_user_defined_field (string name, string? value)
Sets the value of a contact's user-defined field.
User-defined field names are unique (but of the client's choosing), and reusing the same field name will result in the old value of that field being overwritten.
The name of the field may not be null, but may be an empty string.
To unset a field, set value to null.
| this | |
| name |
the field name; an arbitrary, case-sensitive, unique string |
| value |
the field value, or null |