This is probably an easy one: (sorry) I have a database in which I want to first ask the respondent what continent they are from, for example "North America".  I have a drop-down field with 3 choices for continents.  If they choose "North America" from the drop down choice list, then the second field, "countries within north America" would then display.  I can't seem to understand how to format the If/Then statement to get this to work. 

I have clicked on "Actions on User Input" for the first field.  I see the option for the "IF".  I guess it would logically say IF country = North America, THEN drop down field "North America" would display, and drop down field Europe would hide.  I just don't know the proper use of periods, quotations, parentheses, etc.

Any help is appreciated....