Hi manunamu, welcome to perlmonks!

As McA said, but in a little more detail:

1. put one <code> tag before the start of your XML
2. put one </code> tag after the end of your XML
3. put one <code> tag before the start of your code
4. put one </code> tag after the end of your code
5. remove all "&lt;Code>" from your code
6. replace all "&lt;" with "<" (inside <code>...</code> tags you do not need to make any conversions like this)
7. One line of your XML has <tab> characters. Replace them with spaces to ensure it is indented correctly