Are there tutorials on how the If Then operation works in keyword tests

Hi,

I'm fairly new with TestComplete and would like to see an example of how the If Then operation works.  The support article did not help with what I'm trying to do.  I can't find videos on this topic either so I'm guessing there isn't one.

What I'm trying to accomplish is this:

If there is a pop up message, then run the child operation. Else, move to the next operation.  I've attached an image of my keyword test.

Thank you!