Hello World in System Verilog

Problem Description:

assign a string with value "hello world"

Try to solve here: 

EDAPlayGround 

Steps:

"Copy" the playground
In "Tools & Simulator" select Aldec Reviera Pro
In "Tools & Simulator" unselect the "show output file after run"
Type your code in method your_solution() present in solution.sv
"Save" and then "Run"
check the "Log" for SUCCESS or FAILURE message 
one of the possible solutions is in method ref_model() present in test.sv

Code is here: 

GitHub