{ "rules_sync_field_checkbox" : {
    "LABEL" : "Sync field_checkbox",
    "PLUGIN" : "reaction rule",
    "REQUIRES" : [ "rules" ],
    "ON" : [ "node_update" ],
    "IF" : [
      { "entity_has_field" : { "entity" : [ "node" ], "field" : "field_product" } }
    ],
    "DO" : [
      { "LOOP" : {
          "USING" : { "list" : [ "node:field-product" ] },
          "ITEM" : { "commerce_product" : "Commerce product" },
          "DO" : [
            { "component_rules_update_field_checkbox" : { "node" : [ "node" ], "commerce_product" : [ "commerce_product" ] } }
          ]
        }
      }
    ]
  }
}