open gscopefind result in new tab

[benzwt]

how would I open a gscopefind result in tab[page] instead buffer ?

I try to modified gutentags_plus.vim
from
exec 'cs find '.a:what.' '.fnameescape(keyword)
to
exec 'tab cs find '.a:what.' '.fnameescape(keyword)
but it doesn't work.

my settings are as follow:

let g:gutentags_cache_dir=$VIM_HOME."/tags"
let g:gutentags_project_root=['.proj']
let g:gutentags_modules=['ctags', 'gtags_cscope']
"let g:gutentags_modules = ['ctags', 'cscope']
let g:gutentags_ctags_extra_args=['-I SCODE']
let g:gutentags_ctags_extra_args+=['--c++-kinds=+px']
let g:gutentags_ctags_extra_args+=['--c-kinds=+px']
"let g:gutentags_file_list_command = 'find . -type f -name ".h" -o -name ".c" '
let g:gutentags_file_list_command = {
\ 'markers': {
\ '.git': 'git cfiles',
\ '.hg': 'hg files',
\ },
\ }

""=================== 'skywind3000/gutentags_plus' =================
" forbid gutentags adding gtags databases
let g:gutentags_auto_add_gtags_cscope = 0
let g:gutentags_plus_nomap = 1

nmap <C->s :GscopeFind s
nmap <C->d :GscopeFind g
nmap <C->c :GscopeFind c
nmap <C->t :GscopeFind t
nmap <C->e :GscopeFind e
nmap <C->f :GscopeFind f =expand("")
nmap <C->i :GscopeFind i =expand("")
nmap <C->v :GscopeFind d
nmap <C->a :GscopeFind a

[skywind3000]

set switchbuf=useopen,usetab,newtab