Oh, I mean inner game eye calibration. I found it.
"SRanipalEye_Core.h" has 'int LaunchEyeCalibration_(void *)' and wrapped it with 'LaunchEyeCalibration()' I made. And I added this function to header and cpp source. In ordere to call it from blue print you should add it 'SRanipalEye_FunctionLibrary.h' and 'SRanipalEye_FunctionLibrary.cpp' located under "..\Plugins\SRanipal\Source\SRanipalEye\private" and ""..\Plugins\SRanipal\Source\SRanipalEye\public" folders.
Now when I call it from bluePrint I can calibrate my eye position in other seperate inner window from application. That's it.