Array different numbering/name scheme

Array different numbering/name scheme

Good day,
I wanted to ask if its possible to change the way naming works in arrays.
Below i have an eample how my variables are named (bottom one) and how array creates them (top), on the right bottom is what I variable map them to. The prefix for variables is client made so I cant change it too much (ex.: EC_VilniusBEKS_Core01_APSActivePowerTotal I could change into EC_VilniusBEKS_Core[01]_APSActivePowerTotal).
I want to connect all variables through a rule (this would work on all cores).