Blinking dynamic text

ok well i have this news text which is masked by a layer. when it loads the mask layer like boxes out from a small box to a big one with shape tween. But wen the movie reaches last keyframe where i have stop(); command the text vanishes and comes back. its like as if the text is reloaded.

my textbox is in a movieclip

this is the as i have on my text movieclip.
myData = new LoadVars();
myData.onLoad = function() {
placeTxt();
};
myData.load(http://asasd/myData.php);
placeTxt = function () {
this.news1.htmlText = “<b>” + myData.newstitle1 + “</b>” + " was posted by " + “<b>” + myData.userposted1 + “</b>” + " on " + “<b>” + myData.timeposted1 + “</b>” + “<br>” + “------------------------” + “<br>” + “<textformat indent=“30”>” + myData.newstext1 + “</textformat>”;
};

anyways it works like it shows the text come out from a small box but then wen its finished the text goes away and comes back really fast. please help me.