PPTX - is there an option for pptxSlides equivalent with for() { for() { ... }}

[alexandruanica]

I have an object representing an array of arrays similar to:
arr = [
[ "name": "Kelly",
"daily_reports" : [ Day1, Day2, ..., ],
],
[ "name": "Daniel",
"daily_reports" : [ Day1, Day2, ..., ],
],
...
];

Where each day represents the content of a slide with the same template.
Is there an option to iterate trough this array inside a template with a structure similar to:
{{pptxSlides X {
{{pptxSlides Y}}
}
}}

[jan_blaha]

I'm not sure I get the question, would you please provide a playground demo describing the problem?
https://playground.jsreport.net/