Arduino update xml data

Hi everyone!
I have search lots, and finally I was able to get my project moving!
I have learned to create an xml file and get data from it using XMLRequest vía “get”.
I’m using a Nodemcu 12e v.1 I believe, have the WiFi and server running. The index.html and xml file are both in a spiff format folder and running!

My question is:
Can Data let’s say from a sensor be loaded to the xml file?
If so, can someone guide me in the right direction?
Thank you all!

“Can Data let’s say from a sensor be loaded to the xml file?”

I’m not that familiar with the xml files, but if the total file is served from spiff storage, then the data request probably needs to be embedded in the file itself. I’ve made web pages with ifames to display data. The iframes would make meta refresh calls to the server to update the data displayed in the iframe while the page itself remained static.