System Verilog array reduction gotcha and array of parameters - arrays

Question

I am trying to learn array reduction techniques in system verilog. Wrote below module:
module main;
localparam [7:0]PARAM_ARR0[3:0] = '{8'h1,8'h3,8'h4,8'h0};
localparam [3:0]PARAM_ARR1[7:0] = '{4'h3,4'h2,4'h2,4'h2,4'h1,4'h1,4'h1,4'h1};
int s = 0;
logic [7:0]arr0[3:0] = '{8'h1,8'h3,8'h4,8'h0};
logic [3:0]arr1[7:0] = '{4'h3,4'h2,4'h2,4'h2,4'h1,4'h1,4'h1,4'h1};
initial begin
//s = int'(PARAM_ARR0.sum() with (item.index<int'(PARAM_ARR1[0])?item:0));
//$display("sum0 = %0d",s);
//s = int'(PARAM_ARR0.sum() with (item.index<int'(PARAM_ARR1[4])?item:0));
//$display("sum1 = %0d",s);
s = int'(arr0.sum() with (item.index<int'(arr1[0])?item:0));
$display("sum0 = %0d",s);
s = int'(arr0.sum() with (item.index<int'(arr1[4])?item:0));
$display("sum1 = %0d",s);
s = int'(arr0.sum() with (item.index<int'(arr1[7])?item:0));
$display("sum2 = %0d",s);
end
endmodule
If I uncomment the first 4 lines after initial (array reduction on 2D array of parameters), VCS is throwing compile errors like below. Is array methods not applicable on parameter arrays?
Error-[XMRE] Cross-module reference resolution error
../../test_param_array_sum.sv, 10
Error found while trying to resolve cross-module reference.
token 'sum'. Originating module 'main'.
Source info: PARAM_ARR0.sum(item) with (((item.index < int'(4'b1))
? item : 0))
Error-[IND] Identifier not declared
../../test_param_array_sum.sv, 10
Identifier 'item' has not been declared yet. If this error is not expected,
please check if you have set `default_nettype to none.
One more doubt is that when I simulate the code in VCS as is given above, I'm getting below results:
sum0 = 1
sum1 = 4
sum2 = 8
I was expecting results to be 0, 4 and 7 respectively. Because I was trying to get the sum of all elements in arr0 whose index is less than arr1[0] (1), arr1[4] (2), arr1[7] (3) respectively.
Thanks

Answer 1

This works for me in Questa 2019.2. You may have to talk to your EDA AE about what's wrong. Serge's recommendation for using dynamic arrays works: https://www.edaplayground.com/x/26RL
Also, looks like your code is giving the results you expected in Questa.
# Loading sv_std.std
# Loading work.main(fast)
# run -all
# sum0 = 0
# sum1 = 4
# sum0 = 0
# sum1 = 4
# sum2 = 7
# quit -f
# End time: 11:17:11 on May 23,2019, Elapsed time: 0:00:21
# Errors: 0, Warnings: 0