How to select processing instructions?

[robertvanGilst]

I have got a Wix Install file.

<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
  <?define ProductName="My product for ArcGIS 10.2"?>
  <?define ProductVersion="1.3.0.0" ?>
</Wix>

Where I would like to match the define with the ProductName and update the attribute value for that one. How should I select?
I tried with:

Wix/?define/@productname

and

Wix/processing-instruction(define)/@productname

But both fail in the update process.

[sergeyzwezdin]

@robertvanGilst Is this fragment valid XML document?

[robertvanGilst]

Yes, processing instructions are part of the XML Standard

I maybe should have included:
<?xml version="1.0" encoding="UTF-8"?>

It only contains the tags I am interested to update, the rest of the file I have left out.

[sergeyzwezdin]

Indeed, ok. It is not supported for the moment. I'll take a look

[robertvanGilst]

Thank you.

[sergeyzwezdin]

Thank you for your report.
I just fixed the issue.
You can address elements by index:

Wix/?define[0]/@ProductName

Or by attribute name:

Wix/?define[@ProductName = 'My product for ArcGIS 10.2']/@ProductName

Will be released soon as part of 1.3.0.

[sergeyzwezdin]

Latest fixes were released to Nuget and VS Marketplace.

[robertvanGilst]

Hi Sergey, Thank you very much for the quick response and fix. Med venlig hilsen Robert van Gilst