From the documentation: 

[%a = 1%]
[%b = ''%]

[%PERL%]
my $test = "[%a%]";
$test += 1;
$stash->set('b', $test);
[%END%]

[download]
update: added code.

In reply to Re: Template Toolkit Embedded Perl by arkturuz
in thread Template Toolkit Embedded Perl by avo

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