javascript change xml file on the server

I'm making a Design Studio custom component in Eclipse. I created a property 'backgroundColor' in my contribution.xml file. I can call this xml file inside my javascript and adjust it locally, but is there a way I can upload these changes to the server xml file again? Cause at the moment my alerts return all the new data but on the server side nothing happens.

Code that i have:

Contribution.xml:

<property
        id="backgroundColor"
        title="BackgroundColor"
        type="Color"
        group="Display"
        visible="true"
        bindable="true"/>

component.js:

var xhttp = new XMLHttpRequest();
                xhttp.onreadystatechange = function() {
                    if (this.readyState == 4 && this.status == 200) {
                        myFunction(this);
                    }
                };
                xhttp.open("GET", "serverpath/contribution.xml", true);
                xhttp.send();

                function myFunction(xml) {

                    xml.responseXML.getElementsByTagName('property')[0].setAttribute("visible",false);
                    //this returns BackgroundColor so the call does work
                    alert(xml.responseXML.getElementsByTagName('property')[0].getAttribute("title"));

                }

---

You will need to make some server side coding to do that. You could achieve that by making simple rest api. But otherwise without any server side coding you cant do that. You are now getting data with GET request to server which means you cant do any modifications, you simply get any server response data.

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