Feed XML file from excel cells

I need to feed XML files from an excel file. I pretend the XML file catches the text which is in an specific cell. So I can easily update the XML file. As you can see in the XML file I attach, exist text "Textbox1" and "Textbox2". I want it to be changed by content existing in a specific excel cell Mainly I need to learn how to do it If not possible to do from excel file, you can suggest alternative.