Modify description of a running VM from vboxmanage

[wasapl]

I want to modify VM description from vboxmanage. But it fails if VM is running at the time: vboxmanage.exe modifyvm myVM --description "new descr of myVM" vboxmanage.exe: error: The machine 'att9-1034-slave-5' is already locked for a session (or being unlocked) vboxmanage.exe: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), component MachineWrap, interface IMachine, callee IUnknown vboxmanage.exe: error: Context: "LockMachine(a->session, LockType_Write)" at line 493 of file VBoxManageModifyVM.cpp

At the same time I can change VM description via virtualbox manager GUI.

Please, fix modifyvm (or controlvm) command to make it able change VM description while its running.