I realize this thread is a bit old, however, if some one was still looking to adjust contribution points thus being able to level up the base just edit this line, same as those in the above posts,
Original code
Code:
<variable name="faction_contrib" type="Octets">68020000d20000006c020000</variable>
The "d2" inred above indicates that you have 210 contribution points to "donate" or use as you wish.. The code in blue, I have no idea on yet, will be doing more experimenting later on and that much needs to remain as they are, for now anyway, till I or some one can figure out what that is. But, after that, starting at the 9th digit location is where to adjust the code. For instance, placing 3e7 in place of the d2, (note: I delete the 3 codes from the 9th to the 11th first before replacing, you can do as you wish). I can not remember off hand how much in contribution points it gave me, i do know it was well over 20,000. some thing line 28,000 I think.
Modded code
Code:
<variable name="faction_contrib" type="Octets">680200003e7000006c020000</variable>
Also, I would stress to NOT place to high a coding in there, for instance "fff" would KILL the running world and of course, you wont be able to play untill you reset the world AND removed the code that caused the crash. in the example "fff".. Trial and error, I just used the above in mine and it went threw, so then tried "fff" and POOF, world crashed. 
I hope some one may find it useful, or it can be removed if a mod thinks it necessary, no biggy.