How to remove a number from a list controlling a table

i'm controlling data that enter to a table by using a specific one from them,let's call it "number of the user", when a client has the num 5 and enters his data ;it will be stocked in the 5th row.i want this number 5 to be removed from the list ,so when a new user try to enter num 5 he gets a message"number already used" so he have to enter a different number than 5,for instance 8,consequently i'll get all his data in the 8th row.
if anyone know a little trick to solve this problem
thanks

this number has to be a shared variable,every client is concerned .
"There is no need to keep track of anything seperately. Simply check if the requested row has already been filled or not." i'm not sure if i get your point,because i don't want a new user to even try to fill data in same row,for example 5,the moment he enters 5 in "NR_ORDRE" he gets a message"it's already taken" or use a combo box containing numbers when a client use one it gets deleted for the upcoming client.
Attachments:
NR_ORDRE unique.vi ‏14 KB

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Posted by Marc Kelderman SOA Blog at 1/16/2008 09:20:00 PM

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