empty handle and custom object

Hi, I am having a stupid issue (with many, many workaround). I created 2 objects: the firstObj is an object (with handle) that has a property 'jobID'. The otherObj is an object (with handle) that makes table GUI. The latter object has a property 'data'.

When I create the otherObj.data=firstObj.jobID (where initiated as jobID.empty), it seems that no handle are created, therefore, when I set firstObj.job(end+1)=dummyjob, the data in the otherObj does not get updated, as opposed to otherObj.data=firstObj.jobID.notempty where handle hold.

The stylish issue is that I have to "fill" otherObj.data everytime I update firstObj. Is there a way to clean initiate those object?