Please suggest cohen coon tuning VI, calculation error

[MMS79]

Hi,
I am using, cohen-coon tuning vi (Ready block in example-Autotune
PID offline), and refering the Tuning formulae as shown below for PI Controller.
Proportional value has error, where as Integral is fine.

Manual calculation for gain are as follows,

but am geting gain reading such as 0.00454352, why such kind of error?

Attached cohen-coon tuning vi for reference, how to check expression from express mode
Please suggest
Regards

MMS79

[nathand · Accepted solution]

Looks like a bug - the Divide after the 'a' should actually be a multiply. Then the results match.