@Yveaux and @hek bingo! That line in v 1.5.4 does solve the issue.
Thx a lot for the support.
read: 0-0-9 s=1,c=1,t=2,pt=0,l=1,sg=0:0
send: 9-9-0-0 s=1,c=1,t=2,pt=0,l=1,sg=0,st=ok:0
Message: 2
Payload:
getBool: 0
getString: 0
getInt: 0
getByte: 0
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