In the "Change Variables"-Node for the String type variables, the operators "Replace" and "Replace All" seem to do the same (they both replace all occurences).
In the 6th part of the Match3-Tutorial (makinom.com/tutorial/match3/06-jewel-setup/):
At the beginning of part "Jewel Click: Interaction Machine"
Add the component to the jewel prefabs (e.g. using the component menu: Makinom > Machines > Int…