exp multiplier

[ghkhgkajtgfhjkcbg]

I started this skript where if you have a certain xp multiplier it will multiply exp from mobs you kill by the number
example:
My xp multiplier is 3.0, I kill a zombie, it will drop the xp * 3.0. I just don't know how to do that, I spent like 2 hours trying to figure it out.
(idk how to do the code box, sorry)
on player pickup xp:
if {xp::%player's uuid%} is 0.1:

if {xp::%player's uuid%} is 0.2:

if {xp::%player's uuid%} is 0.3:

if {xp::%player's uuid%} is 0.4:

if {xp::%player's uuid%} is 0.5:

if {xp::%player's uuid%} is 0.6:

if {xp::%player's uuid%} is 0.7:

if {xp::%player's uuid%} is 0.8:

if {xp::%player's uuid%} is 0.9:

if {xp::%player's uuid%} is 1.0:

if {xp::%player's uuid%} is 1.5:

if {xp::%player's uuid%} is 2.0:

if {xp::%player's uuid%} is 2.5:

if {xp::%player's uuid%} is 3.0:

if {xp::%player's uuid%} is 3.5:

if {xp::%player's uuid%} is 4.0:

if {xp::%player's uuid%} is 4.5:

if {xp::%player's uuid%} is 5.0:

 

[lotzy]

Skript-reflect needed.
Basic example:

on death of pig:
   set {_xp} to event.getDroppedExp()
   event.setDroppedExp({_xp}*100)