How to infer MLAB memory?

I have a simple memory code

(* ramstyle = "MLAB" *) module memory_module

# (parameter addr_width = 8,

data_width = 32)

(input clk,

input [data_width-1:0] wr_data,

output reg [data_width-1:0]rd_data,

input [addr_width-1:0] wr_addr,

input [addr_width-1:0] rd_addr,

input we,

input re);

reg [data_width-1:0] mem [2**addr_width-1:0] /* synthesis syn_ramstyle = "MLAB"*/;

always@(posedge clk) begin

if (we) mem[wr_addr] <= wr_data;

if (re) rd_data <= mem[rd_addr];

end

endmodule

And I am trying to use MLAB for this. Is there any other attribute that I am missing to infer MLABs?

The attributes in the code do not work as intended.