Hey..yes..that was a typo..i cant copy paste my code here. I had $self->$some_var="abcd";#This was not the problem.

package CommonObject;

my $some_var;
#constructor
sub new{
 my $class=shift;
 my $self = {} ;
 bless $self, $class;
 print Dumper($self);
 return $self;

}
1;


package MyObject;
our @ISA = qw( CommonObject );
use strict;
use warnings;

sub new{
 my $class=shift;
 my $testName=shift;
 my $self = CommonObject->new();
$self->$some_var="abcd";
print $self->$some_var;
return $self;
}

1;

#!/usr/bin/perl

use MyObject;

my $obj=MyObject->new("lkj");
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Thats the exact code