challengeBar()

{

    loadTime = 2.5; //in seconds

	self.challengeBar = createPrimaryProgressBar();

	self.challengeBar updateBar(0,1 / loadTime);

	self.challengeBar.color = (0, 0, 0); //its color

	for(waitedTime = 0; waitedTime < loadTime; waitedTime += 0.05)

	wait 0.05;

	self.challengeBar destroyElem();

}