Access a dataset on a form from a module

I have a dataset on a form with some bound controls.
The transaction based update is quite complex and I would like do place it in a module to keep all of the code for the update function in the same place, and separate from the code on the form

In the form I have a dataset, and when ready to call the update from the form I can access the data in the table by doing something like:-

dim DRow as datarow = me.ds.tables("Potrn").rows(0)

Fine

Now in the module I have :-

dim DS as dataset = form1.ds

now the code:-
dim DRow as datarow = ds.tables("Potrn").rows(0)

returns an error - no data at row(0)

Even more perplexing if I say:-
Dim DRow As DataRow = form1.DS("Potrn").Rows(0)

whereas in the form:-
me.ds.tables("Potrn").rows(0)
works fine
grwallaceAsked:
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grwallaceConnect With a Mentor Author Commented:
It works if use the dataset.copy() method on the calling form
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