{ "rules_update_field_checkbox" : {
    "LABEL" : "Update field_checkbox",
    "PLUGIN" : "rule",
    "REQUIRES" : [ "rules" ],
    "USES VARIABLES" : {
      "node" : { "label" : "Node", "type" : "node" },
      "commerce_product" : { "label" : "Commerce product", "type" : "commerce_product" }
    },
    "IF" : [
      { "entity_has_field" : { "entity" : [ "commerce-product" ], "field" : "field_checkbox" } },
      { "entity_has_field" : { "entity" : [ "node" ], "field" : "field_checkbox" } }
    ],
    "DO" : [
      { "data_set" : {
          "data" : [ "commerce-product:field-checkbox" ],
          "value" : [ "node:field-checkbox" ]
        }
      }
    ]
  }
}