A litle script, but I got no output

[Quattro]

I have made this script:
But when I send a 1 value at this two objectadress, nothing happen. What do I do wrong?

Code:

Input_1 = event.getvalue('0/2/3')
Input_2 = event.getvalue('0/2/9')
Output = '0/2/0'

if input_1 == 1
  and input_2 == 1 then
grp.write(output, 35)
  end