left side hash-slice syntax error => right side array-ref ...

...what???

like roboticus already tried to explain this doesn't make much sense, and we can't guess what the real question is.

Please show us real working code and use Data::Dumper to visualize the data ... that is input and desired output.

And please have a look at How (Not) To Ask A Question

• Only Post Relevant Code
• Include Sample Data (I/O)

update

striked syntax error