ekey script error

[baggins]

Hi,

I have an Ekey finger scanner (Ekey module 861667553) connected to my LM4 (firmware version 20160714).
The Ekey system was installed using the procedure described the in http://openrb.com/ekey-biometric-scanner-interconnection-with-lm

The script used to detect a finger is exactly the same as described in the procedure:

Code:

value = event.getvalue('14/2/0')

user = bit.rshift(value, 4)
finger = bit.band(value, 0x0F)

The fingerscan works but there is always an error message in the Error Log:

              Line 3: bad argument #1 to 'rshift' (number expected, got boolean)

Should I worry about this?