Our client contacted us recently with a new query. They’d like to give away free seat cushions with any purchase of Dyning Loom Chairs the customer purchases. We've setup a cart promotion to give free products on this purchase but we are currently facing an issue. It seems that if the user buys multiple chairs, the cushion total does not change from 1. Is there a way to configure the promotion so that the number of free cushions is equal to the number of chairs bought?