<PropertyList>
 <path>fire.ac</path>

 <animation>
   <type>select</type>
   <object-name>fire1</object-name>
   <object-name>fire2</object-name>
   <object-name>fire3</object-name>
   <object-name>fire4</object-name>
   <condition>
   <equals>
    <property>/sim/armament/weapons/impact/ballistic[0.1]</property>
    <value>true</value>
   </equals>
  </condition>
 </animation>

 <animation>
   <type>scale</type>
   <object-name>fire1</object-name>
   <object-name>fire2</object-name>
   <object-name>fire3</object-name>
   <object-name>fire4</object-name>
    <property>/sim/armament/weapons/impact/ballistic[0.1]</property>
    <interpolation>
      <entry>
        <ind>0</ind>
        <dep>1</dep>
      </entry>
      <entry>
        <ind>20</ind>
        <dep>10</dep>
      </entry>
      <entry>
        <ind>40</ind>
        <dep>100</dep>
      </entry>
    </interpolation>
 </animation>

</PropertyList>