Goto Label at Root

i will explain my project…in root there are many labels i set for tweening about 18 labels and things that i tweened is a movie clip which consist all my design and button. the buttons is inside of another movieclip (root.mainMC.tallest.btnTallest). the problem happen when i try to goto the selected label when click the button and no problem to go for first frame. i have to reclick the button again then it will go. someone please help me. below is the scenario:1. click the button and nothing happen2. click again then okay…tweening pupose is for zooming. everytime i click the button it will close zoom at the button