$ perl -E '
    my $x = "z";
    my $y = 1;
    my $$x = $y;
    say $z;
'
Can't declare scalar dereference in "my" at -e line 4, near "$x ="
Execution of -e aborted due to compilation errors.

##</code><code>##

$ perl -E '           
    my $x = "z";
    my $y = 1;
    $$x = $y;
    say $z;
'
1

##</code><code>##

$ perl -E '
    my $x = "z";
    my $y = 1;
    eval "my \$$x = \$y; say \">>>\$z<<<\"";
    say ">>>$z<<<";
'
>>>1<<<
>>><<<

##</code><code>##

print $out_script_fh "my \$$splitter[0] = $splitter[1];";

##</code><code>##

my $testval = 1;