If I have a table set up as variants and the first selection  is size,  let's say 4x4 and 2x2.  The next line in the variant is a table cloth. Yes or no.  If they select yes how do I get the right one?  Or is the only way to specifically list all the permutations  (instead of yes/no,  list no/ 2x2 table cloth/ 4x4 table cloth etc...) 

Is there any way to put some simple logic in downstream selections?

TIA