[CMake] Experimental builds not always shown in CDash

[NoRulez]

Hello,

in my CTestScript I have the following:

set(MODEL "Experimental")
ctest_start(${MODEL} TRACK ${MODEL})
.
.
.

The script is called from a scheduler every 30 minutes:
ctest -S CTestScript.cmake

Now the problem is, that sometimes the experimental entry are shown in CDash, but not every time when I call the CTest script.

I don't know when it was shown or not.
Did I need to configure some additional settings to get it to work?

I use CMake 2.8.12 on Windows 7.

Thanks in advance