Sets user default VM dir.
PRL_RESULT PrlUsrCfg_SetVmDirUuid( PRL_HANDLE hUserProfile, PRL_CONST_STR sNewVmDirUuid );
PrlApiDisp.h
PRL_RESULT. Possible values: PRL_ERR_INVALID_ARG - non valid PHT_USER_PROFILE handle or non valid (NULL) pointer to the new VM dir string was specified PRL_ERR_SUCCESS - operation completed successfully
Specified string value must be UTF-8 encoding and ends with '0' terminating symbol.