my %my_tcldefs = %{$cliParms->{'tclDefs'}};

##</code><code>##

print Dumper \%cliParms;

##</code><code>##

$VAR1 = {
          'tcl_defs' => {
            my_var1 => 'a',
            my_var2 => 'b'
          }
        };