Examine those caps very carefully.Sometimes people make these caps with no explanations on how to actually do that particular thing.It's quite frustrating when someone post's a "tutorial cap" with no readme file on how they actually achieved this.
I get this alot sometimes.When i ask for help then they send me just a cap.No explanations on how they did it or how some events and formulas work.Wish someone could write a comprehensive tutorial about the more advanced features that Construct has.