need help with event

i need help making a common event item in rog maker xp,
i made a beer item, and when you use it the screen shakes, you move slower and the screen tints dark, i also made it start a timer,and i want to make it so you go normail after the time expires. ive already tried a conditional branch. the whole common event looks like this:


<>tint screen(the integers go here)
<>shake screen(selected variables)
<>timer operation:start(variables)
<>conditional branch:Timer below 0min/2 seconds
<>tint screen to normal
<>stop timer operation