SDK: adding new value in custom fields

Question

Hello,
I wanted to add new value in custom field of the resource table... I used this code (taken from SDK example) :
//Create and fill request for CustomData Service
SaveCustomDataRequest request = new SaveCustomDataRequest();
List<CustomValue> customData = new ArrayList<CustomValue>();
CustomValue attribute = new CustomValue();
//Field name
attribute.setName("NOTIFICATION_NUMBER");
//value received from ERP
attribute.setValue(notification);
customData.add(attribute);
request.setCustomData(customData);
//table name
request.setObjectAlias("RESRCE");
request.setRef(handle);
customDataService.saveCustomData(request);
But get a validation error, complaining about no ModifiedDateTime providen... How can I initialize this date or avoid the validation ?
I also tried using the ResourceDOService, using the setCustomData method, but same error...
Thanks

Answer 1

I'm using ME 5.2.2.2, sdk 5.0.1.8, for the moment locally on my laptop for development.
There is no stack trace, I can just see the error when debugging :
com.sap.me.frame.domain.RequiredValueValidationException: class com.sap.me.domain.model.CustomFieldDOmodifiedDateTime
The resource exist, I do a read request before to check if the custom field has value or not. Anyway, it's a collaboration plug-in, executed when we change the resource status, so I got the resource handle as input ;o)
I can confirm there are some resource with custom value in other fields with date = null. It occurs when I'm saving the data in the GUI (so entering data's manually in custom field, do a save => fields are not initialized)
Regards