How to determine JSON Path to Array in nested array for a Custom Array Request

I am trying to create a custom request of type Array using orchestration output as the input string.

This is the orchestration input string is

{
"DR_2_Repeating": [
{
"DR_2": {
"TFSFileFound": [
{
"name": "TEST3.PDF",
"key": 1
}
]
}
},
{
"DR_2": {
"TFSFileFound": [
{
"name": "TEST2.PDF",
"key": 1
}
]
}
},
{
"DR_2": {
"TFSFileFound": [
{
"name": "TEST.PDF",
"key": 1
}
]
}
}
]
}

I can't figure out the JSON Path to Array value.

If I remove the DR_2_Repeating array then I can get it to work with DR_2.TFSFileFound

Any help would be appeciated.