00:00 Select the Interact tab.
00:08 In the Variables section, select More...
00:12 To start, we'll set the Trigger (the event that needs to happen in order to enable the Next button).
Select Variables.
00:16 Select the Select a Variable drop-down list.
00:20 Select the variable AllClicked.
00:28 Since the Custom Variable is a number variable, the related set of options is now shown.
Select Equal to.
00:32 The Enter Value field is where you add in the value that you are checking for. For our example, we want to know when the AllClicked variable reaches a value of 3.
Select the Enter Value field and we'll add in 3 for you.
00:40 Now that we've set the Trigger we need to set the Action that will be triggered (i.e., what will happen when the variable reaches 3.)
Select Player Controls.
00:44 Select Enable Next Button.
00:52 The Page Actions and Timings panel will open to the right of the Stage so you can confirm the settings that have been chosen.
Select Apply.
00:56 The action has been added.
You will need to use the Full Project Preview to confirm that the action is working.