Can I change XML files without the test substitution?

[Kotiomkin]

I have always seen XML file change in IS made with the text substitution.
Ok, but how can I change XML files during installation by parsing the XML? :confused: I don't want to handle the file as a normal text...
Infact, if I want to let my user be able to change one XML file during the MAINTEINANCE MODE, but I can't do this ...
Why? Because I make a marker inside the XML file - something like this:

@PUT_THE_USER_STRING_HERE@

that will be changed be the "XML File Changes" with the user's data.
But if I want to re-change this file during another installation (i.e. during the MAIN MODE) I should replace the marker again: but isn't possiblle...!
Is there any way (without spit blood...) to handle XML files in IS (or with some extra-IS tricks)?

I think it's time for IS to resolve this problem, isn't it ??!!


Thanks to all!

[RobertDickau]

If is unique, it should be straightforward. For example, in an InstallScript project I used the XML File Changes view to create file UpdateMe.xml with root element and subelement , where has content "". ("" being an InstallScript text substitution, not an XML tag.)

In OnBegin I included:

function OnBegin( )
    STRING svNow;
    NUMBER nvIgnore;
begin
    GetSystemInfo(TIME, nvIgnore, svNow);
    MessageBox(" = " + svNow, INFORMATION);
    TextSubSetValue("", svNow, FALSE);
end;

At run time, installer created file with these contents:

    12:24:36

And later, running in maintenance mode and using the Repair option updated the time:

    12:34:56