Hide Next button until all layers viewed/visited

Hi Alyssa Gomez, 

thanks for the story file however I am still having issue on the "Next" button not appearing when all the hotspots for each layers have clicked. 

I have based what i have done from your file.

VARIABLES:

o1 default value = False

... so on until o6 default value = False

TRIGGERS:

Change state of Next button to Hidden when Timeline Starts on this slide

Hotspot 1

set o1 to value True when user clicks hotspot1

show layer Apple when user clicks hotspot1

Hotspot 2

set o2 to value True when user clicks hotspot2

show later Ball when user clicks hotspot2

... so on until Hotspot 6 (o6)

o1

change state of Next button to Normal when o1 changes

if o1 = value True and o2 = True and ..... so on until o6 = True

... so on until o6