Webbooking in IFrame HTML element will only receive query parameters from host site defined in his init.js settings
You can change this by submiting your host site URL, which is using Webbooking in IFrame.
var goApp = {};
goApp.oInitParams = {
"iframeparenthost" : ["https://hotel-kiel.info/buchen"],
"iframeparenthost_timeout" : 1000,
"jsonp": false,
"host": "",
"jsonservicename" : "getdata.htm",
"picturespath" : "webtemp/",
"slideinterval" : 5000,
"maxrooms" : 9,
"max_roomplan_days": 30,
"dont_show_parking_conditions": true,
"max_number_of_adults": 2,
"max_number_of_children_1": 2,
"max_number_of_children_2": 2,
"max_number_of_children_3": 2,
"use_children_category_for_additinal_bed": 0,
"begin_with_number_of_rooms" : false,
"usemaps" : false,
"default_language" : "de",
"only_default_language" : false,
"allow_serbian_language" : false,
"oHotelData" : {
"Name" : "Hotel Citadel Demo",
"Street" : "Alter Münsterweg 29",
"City" : "48231 Warendorf",
"Phone" : "+49 (0) 25 82 - 66 46 3-0",
"email" : "info@citadel.de"
},
"queryparams" : {
"arrival" : "anreise",
"departure" : "abreise",
"building" : "gebaeude",
"building_code_is_in_note" : false,
"persons" : "personen",
"adults" : "erwachsene",
"child1" : "kind1",
"child2" : "kind2",
"child3" : "kind3",
"child_category_for_pets" : "",
"gotoroomtypespage" : "",
"gotoroom" : ""
}
};
Also, take a look into https://iframe.citadel.rs/reservierung/index.html
There you can see how to setup your IFrame.