How to write a dint array to a PLC?

[StefWe]

After successfully reading an array of 2 dint from S7 PLC, e.g. DB550,DI1234.2, I also wanted to write a dint array back from NodeRed. Unfortunately, I was not successful so far. I have the following flow settings

to read:

to write:

flow:

i get the following error:

How to define the write endpoint correctly? In the description is written that payload and variable has to be defined as array, but how?

[StefWe]

My solution now is to put a function between the two nodes.

Inside the function we copy the payload array.

msg.payload = [msg.payload];