Two quick ideas, are you using single quotes to assign that variable, such as? 
my $line = 'Hello $cgi->param("name"), how are you today?';

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If not, I believe you can't use method calls inside a string, and expect it to interpolate, use an temp variable, such as: 
my $name = $cgi->param('name');

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and then: 
my $line = "Hello $name, how are you today?";

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If making an temp variable for each param, then a nice hash will do: (Untested) 
my %cgiform;
for my $key ($cgi->param) {
  $cgiform{$key} = $cgi->param($key);
}

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And then you can just use $cgiform{name}.

Update: If you have more than one value with each form input, follow Kanji's suggestion bellow.

In reply to Re: How do you replace variables in an external string? by lshatzer
in thread How do you replace variables in an external string? by Anonymous Monk

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