Sorry forthe unclear spec...Hope the below is clear

Spec:- After the last "\" $x should match the pattern Y(digit)(number).The reason is "$x" is given as an option by the user and we use the letter to distinguish the location of some files,we only want to process locations with letter Y.Can you please help?

my $x = "\\\\files\\builds\\data\\M9998SBQCACSYD30401S";-->should matc
+h

my $x = "\\\\files\\builds\\data\\M9998SBQCACSAD30401S";-->Should not 
+match
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