<Products>
<Product>
  <PAYTERM_LABEL>Test 1</PAYTERM_LABEL>
  <CurrencyCode>EUR</CurrencyCode>
  <Category>Flat screens</Category>
  <Price>399.000</Price>
  <CategoryName>Flat screens</CategoryName>
  <PictureUrl>HT-1035.jpg</PictureUrl>
  <Name>Flat Basic 15</Name>
  <QuantityUnit>EA</QuantityUnit>
  <ShortDescription>19 inch Optimum Resolution 1600 x 1200 @ 85Hz, Max resolution 1984 x 1488 @ 75Hz, Dot Pitch: 0.24mm</ShortDescription>
  <DELETED_FLAG>X</DELETED_FLAG>
</Product>
<Product>
  <PAYTERM_LABEL>DO NOT USE</PAYTERM_LABEL>
  <CurrencyCode>EUR</CurrencyCode>
  <Category>Ink jet printers</Category>
  <Price>139.000</Price>
  <CategoryName>Ink jet printers</CategoryName>
  <PictureUrl>HT-1050.jpg</PictureUrl>
  <Name>Deskjet Super Color</Name>
  <QuantityUnit>EA</QuantityUnit>
  <ShortDescription>1200 dpi x 1200 dpi - up to 19 ppm (mono) / up to 18 ppm (colour) - capacity: 80 sheets - Hi-Speed USB, Ethernet</ShortDescription>
  <DELETED_FLAG></DELETED_FLAG>
</Product>
</Products>

In above xml I would like to set value of <DELETED_FLAG> to “X” If “PAYTERM_LABEL” contains “DO NOT USE”

Thanks for any advice