=IF(A1="",B2,A1)
The formula above has been working well elsewhere in my spreadsheet it basically says that if A1 is blank then use the info in cell B2 otherwise use A1. In my spreadsheet B2 looks up a value and i use A1 to override this value if i need to.
However i am trying to do the same thing with A1 using a drop down list, the formula works until you change A1's value using the drop down list, at which point nothing happens as Excel doesnt seem to notice this state change as it would when you physically type something in.
Does anybody know of a way around this or a way of forcing a state change??
Many thanks
Stuart
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