How to create scrolling gallery in portfolio? - Flash

How to create scrolling gallery in portfolio?

- Create text and make it dynamic and multiline.

- Right click on text and select scrollable.

- Assign the text to a variable.

- Select the second layer to select objects.

- Convert the objects into buttons as UI on action script.

- Write the below script for the first button
on(press) {
_root.variablename.scroll += 20;
}
- Write the below script for the second button
on(press) {
_root.variablename.scroll -= 20;