Can't get Scoreboard objective scores with bukkit event

[dergrosehd]

Hi, I would like to use an expression to read scoreboard objectives. Unfortunately, I get only an error and no output.
My code:

inport:
    org.bukkit.scoreboard.Score 
expression score of %player% out of [objective] %string%:
    get:
        return Score.getPlayer(expression-1).getObjective(expression-2).getScore()

command /stats [<text>]:
    trigger:
        if arg 1 is "Deaths":
            score of sender out of "Deaths"
            send "You have %{_value}% deaths"
        if arg 1 is "Level":
            score of sender out of "Level"
            send "You are at level %{_value}%"

The error in the console when executing the command:

[Skript] No matching static method: Score.getPlayer called with (dergrosehd (CraftPlayer))
[Skript] Did you misspell the method? You may have meant to type one of the following:
[Skript] * %Score%.getPlayer

Can soneone help me