unable next button

Create a T/F variable named something like ThisSlideVisited1 with a unique name for each slide. 

Create a trigger to set ThisSlideVisitedX to True when the timeline ends on each slide.

Create a trigger to disable NEXT button when timeline starts on slide unless ThisSlideVisitedX = True.

Set timeline to restore initial state on revisit.

Remember that the variable on each slide must have a unique name.

as said by you i have created a variable with default value sets on false

variable is used as below described:

• Used by a slide trigger on "1.1 Untitled Slide" in "1 Untitled Scene"

Trigger Text: "Set ThisSlideVisited equal to True When the timeline ends "

• Used by a slide trigger condition on "1.1 Untitled Slide" in "1 Untitled Scene"

Trigger Text: "Change state of the next button to Disabled When the timeline starts If ThisSlideVisited is equal to False "

but it doesn't work.

what do you mean with Set timeline to restore initial state on revisit, that the slide properties must be set on reset on initial state when revisited?

Hi Federico - click the Slide Properties in the bottom right and ensure this following options is set.

Hi Wendy, slide's properties are already set as indicated by you.

if i set "Change state of the next button to Disabled When the timeline starts If ThisSlideVisited is equal to False"  next button is disabled but when timeline ends the button is still disabled

if i set "Change state of the next button to Disabled When the timeline starts If ThisSlideVisited is equal to True" next button is not disabled 

It will be the trigger order.

1. Change state of Next button to disabled when timeline starts on condition SlideVisited is not equal to True
2. Adjust variable 'SetSlideVisited' to True when timeline ends
3. Change state of Next button to Normal when timeline ends on condition SlideVisited = True

See attached sample if this is what you need

now next button works right but when i revisit the slide the button is still enable; i have tryed with any slide's config :(

Sorry I must misunderstand you..

Do you want on first visit the Next button disabled then when timeline ends the next button enabled, then I come back and Next button should be enabled or disabled?

sorry Wendy, probably i'm not so clear :P

when i come back i would next button should be enabled

That is what my file does Federico.  See this video and tell me if it is what you want.

Great!! i have copied your trigger and now it works! many thanks

if i want apply this at any slide do i have to create variables for every slide?

Great Federico - glad that helped. Yes each variable must have a unique name. 

ok many thanks!