Hi, What should be the Regex if data contains just alphabet letters for the following :

if ( ($action eq "UPDATE")  && ($custid =~ /\d+/)) {
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CustomeIDs are like :

CustomerID 
------------
 ALFKI
 ANATR
 ANTON
 AROUT
 BERGS
 BLAUS
 BLONP
 BOLID
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Many thanks Terry