attachMovie and components

programming flash
1

hi all,
i’ve a problem with components and attachMovie.
this is my simple test code:

var mc:MovieClip;
for (var i = 0; i<5; i++) {
    mc = attachMovie("mc", "mc"+i, i, {_x:200, _y:i*150});
    mc.testo.text = "plp"+i;
}

where “mc” is the the linking name of the movieclip in the library, and “testo” is the istance name of a textInput component inside the “mc” symbol.
But the component dont display the text, why???
if i put a normal dynamic textfield in the “mc” all work correctly (with the same code) so why with components not?

tnx to all