Hi, It's fine. Best wishes, Clive
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AnonymousI don't feel that the word "great" fits here but I am not sure why.Same here. I think it's just that we don't hear it said that way as often. You have been a great help seems the more usual way of using great help.
AnonymousIs this sentence okay with "great" or is breaking a grammar rule?No grammar
CalifJimYou sometimes hear "Well, you're a great help!", to mean exactly the opposite.Anonymous You have been a great help seems the more usual way of using great help.
CJ