IMHO both variations suffer from escapism.

When I have to insert double quotes into a double quoted string, I will most likely use qq for better readability:

my $message = qq(<event id="ALERT_${tier}_$code1" source="APP">);

YMMV

In reply to Re^2: the variable is not getting assigned by pKai
in thread the variable is not getting assigned by s_gaurav1091

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