What's New in Director 8.5 > Director 8.5 Tutorial > Use 3D behaviors for navigation > Add the trigger behavior |  |

Add the trigger behavior

You'll now add a behavior that triggers the Click Model Go to Marker behavior when the user clicks the left mouse button.

Note: When a movie with a Mouse Left behavior is played on a Macintosh computer with a single-button mouse, simply clicking the mouse initiates the trigger effect.

1 | In the Library List pop-up menu, choose 3D > Triggers and drag the Mouse Left behavior to the Magic tricks sprite.
2 | In the Parameters for Mouse Left dialog box, specify the following:
| In the "When does this Action occur?" pop-up menu, verify that "Anytime the left mouse button is being pressed" is selected.
| Verify that "No modifier key" appears in the second text box and that the third text box is blank.
| In the Select a Group and Its Action pop-up menu, confirm that Group Cards - Go to Marker appears. Then click OK.