Hello

im triyng to save prevalues on my costum Propertytype after saving some contentType ...something like this :

            dataTypeService = ApplicationContext.Current.Services.DataTypeService;
            dataType = dataTypeService.GetDataTypeDefinitionById([MY_DATATYPE_DEFINITIONID]);
            var PreValues = dataTypeService.GetPreValuesCollectionByDataTypeId(dataType.Id).PreValuesAsDictionary;
            var prevalue = PreValues.Where(c => c.Key == "SampleData").FirstOrDefault();
            prevalue.Value.Value = "0";
            dataTypeService.Save(dataType);

but i was afraid that this didnt work ... and it didnt :( because when i open settings on my Property the flag is still checked ...

any ideas of how to do that ?

thank you

Angelo