title: XML increase specific values with number
body: <p>I am a noob if it comes to XML and/or Python, so this may be a stupid question. I can't find any answers on the internet... </p>
  
  <p>So I have an XML file which is used in a game engine (GTA 5) but i need to increase all Z-values (Those are the vertical coördinates in 3D space) because my own map object spawns too low, down in the sea. All my z-coördinates should be increased with 153,433 for it to spawn above sea level. Problem is, i have a few hundred of these z-coördinates, and they are all different... So if I would do it manually it would take some time.</p>
  
  <p>Is there a way, to add (in this case) 153,433 to ALL of the z-coördinates? A friend thought Python might do the trick but he doesn't know much about it.</p>
  
  <p>Here an example, where z = 21,2429: </p>
  
  <pre><code>&lt;Item type="CEntityDef"&gt;
    &lt;archetypeName&gt;OBJECT&lt;/archetypeName&gt;
    &lt;position x="-3033,01" y="-7256,72" z="21,2429" /&gt;
    &lt;rotation x="0,0" y="0,0" z="0,0" w="1,0" /&gt;
    &lt;scaleXY value="1" /&gt;
    &lt;scaleZ value="1" /&gt;
  &lt;/Item&gt;
  </code></pre>
  
  <p>Now, I would have to get 21,2429 and add 153,433 to it. But on other objects, the z-value is totally different from 21,2429... </p>
  
  <p>This may be a kind of weird question, but I would really appreciate it if someone could help me.</p>