[sv-ec] wait on event

Hi, please have a look at this case:

module event_wait (input [7:0] in1,in2, output reg [7:0] out2);
event ev2;

always @*
begin :B2
  out2 = in1 ~^ in2;
  -> ev2;
  wait (ev2);
 end
endmodule

can I use 'wait' statement as in the example?
Some tool says it is illegal usage of 'wait' statement, (e,g:" an event 
is not a legal rvalue").
 From LRM-1800 it is not clear, please give me your comments on this.

Thanks,
Soumya



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