This action is used to set new values and modify existing state parameters.

Configuration examples:

{
  "p1": "1",
  "p2": "{{p1}}+2",
	"p3": "My name is {{name}} {{surname}}",
  "p4": "{{currency_mapped_obj.total}}*2+4+{{p2}}*2"
}

As you can see, the parameters can be set sequentially and use the parameters set above in the calculations.