Excercising option as trigger point for sales contract?

[Stacy Steven Smith]

Please forgive my newbie question regarding wholesaling,... but is it possible, or common, to put in your sales contract that it commences upon the excercising of the seperate Option contract? The Option to Purchase will of course have an expiration period, and thus if never excercised, should you not be able to find a buyer, the sales contract would be void.

I had assumed this is how it would work, but after seeing some comments on this forum,..I'm not so sure I've got it right. Any observations would be greatly appreciated.