how to config the function RemoteDisplay throuth vnc by vmrun?

i'd like to remotely control the virtual machine by vmrun.

but  i can't make it work the RemoteDisplay throuth vnc all the time with vmrun command.

here is my cmdline:

        vmrun -T ws writeVariable <.vmx path>  runtimeConfig RemoteDisplay.vnc.enabled TRUE

i connect to the virtual machine with my realvncviewer:

        127.0.0.1:5900

failed to connect.

any suggestion?

Thanks!