Dropping Zeroes

I have been thrust into this role and this is the my first time looking at XML Code and I am stumped :

I am supporting a piece of code that is generating check data. This XML code is working nice but when it extracts a zip code field that begins with a leading Zero it is dropping that zero and making the Zip invalid( example zip 06060 is appearing as 6060).

I have never worked with XML before so how can I add a zero if zip code length < 5 characters ?

Below is the XML piece that extracts the zipcode:

<Element type="DataElement" length="10" padchar="" justify="R" field="Summary/Address/PostCode" />

I need to leave the length at 10 to allow for addresses with ZIP+4, so just 0 padding fixed my issue but created another.

save the Noob and save the world

It's not really a question of XML: whatever code that generated the XML is what you have to fix.
Sounds like it's treating the zip code as a number when it shouldn't?