KNX/TP link scripting

[DarthPaul]

Try removing all leading spaces like this:

Ahh that helped.. not the first time I did that mistake.. :-(

Now the script is acceppted. But, it still do not work. 
I inserted both: 
      grp.write('0/0/1', true)
      grp.write('0/0/1', false)
and later  
     grp.update('0/0/1', true)

But the change never occurs. the address 0/0/1 is never changed or written.
I tried it both without and with sleep interval, and i also pulled and reset the KNX-plug. Nothing ever happens.
Do i need something in user.lib?