So I discovered the rank, and base expressions as described here. Got it working. Not a fancy list...but it works.
MyClass<*>{
children
(
#array
(
rank: 2,
base: 0,
expr: $e.v[($i % $e.nRow)][($i - $i % $e.nRow)/$e.nRow],
size: ($r==1)*$e.nRow+($r==0)*$e.nCol
)
)
}