From http://docs.fusioncharts.com/powercharts/Contents/ChartSS/MALine.htm MultiAxisLine fusion chart data example

data.xml

<chart caption='Power Generator' xAxisName='Time' showValues='0' divLineAlpha='100' numVDivLines='4' vDivLineAlpha='0' showAlternateVGridColor='1'  alternateVGridAlpha='5'>
   <categories>
      <category label='00:00s' />
      <category label='00:04s' />
      <category label='00:08s' />
      <category label='00:12s' />
      <category label='00:16s' />
      <category label='00:20s' />
   </categories>
   <axis title='Power' titlePos='left' tickWidth='10' divlineisdashed='1'> 
      <dataset seriesName='Power [W]' >
         <set value='6' />
         <set value='26' />
         <set value='16' />
         <set value='27' />
         <set value='28' />
         <set value='33' />
      </dataset>
   </axis>
   <axis title='Temp.' titlePos='left' numDivLines='14' tickWidth='10' divlineisdashed='1' >
      <dataset seriesName='Temperature'>
         <set value='296' />
         <set value='311' />
         <set value='336' />
         <set value='371' />
         <set value='389' />
         <set value='393' />
      </dataset>
   </axis>
   <axis title='Speed[RPM]' titlepos='RIGHT' axisOnLeft='0' numDivLines='10' tickWidth='10' divlineisdashed='1'>   
      <dataset seriesName='Speed'>
         <set value='1' />
         <set value='11' />
         <set value='36' />
         <set value='49' />
         <set value='68' />
         <set value='88' />
      </dataset>
   </axis>
</chart>