Dialog, help with trigger action

i was reading this tutorial about td's how to make the difficulty and i came across this and i dont know how to do it

Now for your reaction trigger
Event: Clicked button for Dialog Dialog
Action
If Dialog button clicked =DB2
then
Player handicap for Nuetral Extra to 200%
If dialog button clicked = DB3
then
Player Handicap for Nuetral Extra to 300%
else nothing.

would it be if/then/else? or what