I don't think the error is where you think it is. For example this code compiles and runs just fine:

my @RSB_ARRAY;
my $counter = 1;
my $rsb_counter = 2;
my $rsb_amount = 10;

$RSB_ARRAY[$counter][$rsb_counter]=$rsb_amount;

print "Value = $RSB_ARRAY[$counter][$rsb_counter]\n";
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Perhaps you should strip your code down until you can post a 4 or 5 line fully contained piece of code that exhibits the problem, and then post it?

(Although often you'll find when you do this you don't actually need to post it, as you'll have already found the problem yourself by them!)

Thanks,

Tony