Useage of variables in XML file

[luiz]

My XML file look like this:\[code\]<?xml versiion="1.0" encoding "utf-8"?><graph caption='chart' xAxisName='songs' yAxisName='votes' showNames='0' decimalPrecision='0' formatNumberScale='0'> <set name='song name' value='http://stackoverflow.com/questions/2055688/1233' color='AFD8F8' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/857' color='F6BD0F' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/671' color='8BBA00' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/494' color='FF8E46' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/761' color='008E8E' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/960' color='D64646' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/629' color='8E468E' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/622' color='588526' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/376' color='B3AA00' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/494' color='008ED6' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/761' color='9D080D' /> <set name='song name' value='http://stackoverflow.com/questions/2055688/960' color='A186BE' /></graph>\[/code\]Can I use variables in this file in the value='http://stackoverflow.com/questions/2055688/$variable'???help!!!