Set KNX object's value via HTTP?

[gjniewenhuijse]

Does your password contain any special characters?

nope, in the format: abc12345

result log:
* arg: 1
  * nil
* arg: 2
  * string: revcd alert fatal error
* arg: 3
  * nil
* arg: 4
  * nil

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or is there a better/safer way to sync some groupaddresses between a homelynk and a logicmachine?