Try to creae modbus things and items for my Wibeee Energymeter - please help!

Hi,
i am not so familiar with modbus and am trying to create the things and item files for the Wibeee-Energymeter which has the following modbus-registers:

Bridge modbus:tcp:Wibeee [ 
	host="192.168.0.15", 
	port=502, 
	id=1,
	rtuEncoded="true",
	connectMaxTries=3] 
{
Bridge poller Irms1x10 [ start=3, length=3, refresh=6000, type="input" ] {
Thing data CurrentL1 [ readStart="3", readValueType="uint16" ]
}....
and so on....

items-file:

Group gWibeee

Number CurrentL1                "Strom P1 [%s ]"                     	<power>            (gWibeee)         {channel="modbus:data:Wibeee:CurrentL1:number"}
Number CurrentL2                "Strom P2 [%s ]"                     	<power>            (gWibeee)         {channel="modbus:data:Wibeee:CurrentL2:number"}
Number CurrentL3                "Strom P3 [%s ]"                     	<power>            (gWibeee)         {channel="modbus:data:Wibeee:CurrentL3:number"}

for sure my syntax is wrong… i tried to identify how it has to go by watching some other working modbus tcp things… but i need help…

Hope to find here…

saludos,

Oliver