thanks for your clarification.
I am actually trying to extend the 'cell object', in order to contain not only a Value and layout attributes. I would attach custom objects , with own properties.
And what i m trying to do is to individuate exactly which cell of the sheet has fired the onChange event. Also a Row-Col index would work. In order, then to get the 'cell object' and loop through its properties.
Is it something i can achieve at this stage?