Need help regarding text loader

hi guys i have made the dynamic text loader to the flash file.
which is not workin.
here is the script


loadVariables("text.txt", "");
this.onLoad = function() {
	filesize = txtCamp.getBytesTotal();
};
this.onEnterFrame = function() {
	loaded = txtCamp.getBytesLoaded();
	txt_loader._visible = true;
	if (loaded != filesize) {
		txt_loader._visible = true;
	} else {
		txt_loader._visible = false;
	}
};


don’t understand where is the problem on the script.

i need the preloader before the text loads to the swf file.

plz help