multiple stretches in one parameter

[Anonymous]

I want to create a dynamic block of a sofa that stretches with a linear parameter. The block is a sofa with three cushions. How do I create a dynamic block that stretches all the cushions equally in one direction?

[Libbya]

You add the appropriate number of stretch actions to the linear parameter.  You change the distance modifier of each stretch action so that it stretches its linework the appropriate distance.  If you want further explanation (screencast) then post your block.