Formula for read int64 on schenider iem3255

Hi Guys,

i want to ask for help to solve my problem,
I am new on node red, I have a task to read the iem3255 kwh meter data from my company,
I have been able to read the data for the voltage, phase current, but I have not been able to read the data on the total active energy

can anyone help me or have formula to read total active energy ?

last my formula for read voltage or etc,
return msg


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