in reply to Missing $ on loop variable at measurements2.pl line 69.

You need to bring the my inside the for statement for each offending line in order to declare the variable.

for my ($counter=0;$counter<9;$counter++)

[download]
needs to be 
for (my $counter=0;$counter<9;$counter++)

[download]

Hope this helped,
-v.

"Perl. There is no substitute."

In Section Seekers of Perl Wisdom