umlauts and symbols in Jmeter

I want to make a simple HTTP-Request in JMeter. I'm using some variables of a CSV I just created. In this CSV are names like "Müller" or "Böhm".

So when I run the test I notice that Jmeter convert "Müller" into "Müller".

I create my CSV in Notepad++ (UTF-8 without BOM).

Furthermore I change Jmeter.properties:

sampleresult.default.encoding=UTF-8

An other idea was to use the post-Benshellsampler:

prev.setDataEncoding("UTF-8");

and

request.setCharacterEncoding("UTF-8");

None of these worked for me.

Errorreport: http://ift.tt/1Mex77D

JMeter: 2.13 | Plugins: Webdriver, Standard, Extra, ExtraLibs (1.3.1)