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Hi I am new to Perl

i have initial variable like

my $ini=4;
my $last=2;
[download]

i am creating hash in the following way

my %result=(

SAS1=>$ini-$last,
SAS2=>$last-$ini,
SAS3=>$ini-$last
);
[download]

then i am printing the hash values

O/P will be like this

-2

now i wants to change the value of variable like

my $ini=10;
my $last=5;
[download]

Now my problem is whenever i change the those variable

then those values should reflect in the hash %result

and whenever i print the hash it should display the latest result like

-5

can anybody help me :-)

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