call functions within duty - peep actionscript 2.0

i'm perplexing duty after i bucket xml actionscript, i'm only wondering i function. example:

//function declarations
function parentfunction()
{
    duty callme()
    {
     textfield.text = "lawl";
    }
}

now, how i "callme()" function opposite biased code, an onrelease function?

on(release)
{
callme(); //doesn't work
parentfunction().callme(); //doesn't work
parentfunction.callme(); //doesn't work
}

actionscript 2.0 only wonky! any ideas?