How to use multiple outputs to combine into one array?

What are you trying to achieve?

I have on aggregator output a collection array containing DataBuffer, codepage: binary.
I want to add another element to this array, which I get at the output of another module. It also contains DataBuffer, codepage: binary.
How do I do this?

Steps taken so far

I’ve tried parsing json:
{
{ “Item”: {
“key": ”file5”
“data“: ‘{ ’{{2.resImgData}}”,
“fileName": ‘{{2.resImgName}}’,
“fieldType": ”file”
}
}
And then wanted to use the add function
{{add(5.array; 20.Item)}}
But at the json parsing stage I got an error:
“Source is not valid JSON”.
From the input, it is clear that the binary data of the file is substituted for the DataBuffer. And due to the size of the string, the json string is not formed to the end.
Maybe it is possible in an aggregator to combine different outputs at once?

Screenshots: scenario setup, module configuration, errors