Autotune PID Online and Inline vi%2C is there any bug in software%3F

[MMS79]

Hi,
i am using labview 2014, I am using Autotune PID Online and Inline vi for level control,
from examples, control and simulation, PID.
while calculating PID values from waveform. calculation goes wrong.
attached image for your reference.
Please suggest.

[MMS79]

hi,

Please any body tell me that the constant which has value 2 is by mistake,

or is there any logic behind that.