Not Identifying a blank cell value?

Why would the following not see a blank cell so I make the first blank row =  I5  and SetCurrentRow to that?
Any ideas?

			If i4 > 1 Then 'if SO row is >1 chg i5 SetCurrent row to the first blank.
				val_PurOrdNum = DataTable.Value("PurOrdNum","POItemInformation")
				Do While Not val_PurOrdNum = ""
					i5 = i5 + 1
					Datatable.GetSheet("POItemInformation").SetCurrentRow(i5)
				Loop
			End If
			Datatable.GetSheet("POItemInformation").SetCurrentRow(i5)

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RWayneHAsked:
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Rgonzo1971Commented:
HI,

you test val_PurOrdNum but on the do while but I do not see it could change afterwards

Regards
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RWayneHAuthor Commented:
Not following this reply, perhaps you could suggest an edit?
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RWayneHAuthor Commented:
I see it now, I was not checking the new value, when it moved down a row.  I just copied Ln2 inside the Do While after Ln5.  I did not even see that.  Thanks.
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RWayneHAuthor Commented:
Thanks for the help.
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