Informations in asset disapear after a put - hyperledger-composer

Question

I work in hyperledger composer. On model cto I define
- an asset Child which contains a list of vaccine. This asset is defined by :
asset Child identified by childId {
o String childId
o String name
o String surname
o DateTime dateOfBirth
o Vaccin[] vaccins optional
--> Parent hasparent
--> Doctor hasdoctor
}
an asset defVaccin which contains some definitions of vaccines. A vaccin is defined by :
asset defVaccin identified by vaccinId {
o String vaccinId
o String diseases
o Integer timeFirst
o Integer timeSecond optional
o Integer timeThird optional
o Integer timeFourth optional
o Integer timeFifth optional
}
To create/add vaccines in this list, I use a transaction "vaccinate" which is defined like this on the model cto :
transaction Vaccinate {
--> Child inchild
--> defVaccin aboutvaccin
o DateTime dateOfVaccin
}
And like this on logic.js
function vaccinate(vaccinate) {
var factory = getFactory();
var vaccin = factory.newConcept('vaccinspace', 'Vaccin', vaccinate.aboutvaccin.vaccinId); // create vaccin concept
// define value of concept's properties
vaccin.vaccinId = vaccinate.aboutvaccin.vaccinId;
vaccin.dateOfVaccin = vaccinate.dateOfVaccin;
// add this vaccine at the list of child's vaccines
vaccinate.inchild.addArrayValue("vaccins", vaccin)
return getAssetRegistry('vaccinspace.Child')
.then (function (assetRegistry) {
return assetRegistry.update(vaccinate.inchild); // update the list of child's vaccines
});
}
This works fine, i have all my vaccines in my list. But if i modifie my child or my vaccin (just do a put to change child's name for exemple), i have an empty list after.
Does someone knows why my informations "disapear" from my list ? How can i change this?

Answer 1

see example here -> https://github.com/hyperledger/composer-sample-networks/blob/master/packages/carauction-network/lib/logic.js#L89
try
// add this vaccine to the list of child's vaccines array of concepts
vaccinate.inchild.vaccins.push(vaccin);
instead of
// add this vaccine at the list of child's vaccines
vaccinate.inchild.addArrayValue("vaccins", vaccin);