remove active user with api in c#

RouterOS General
1

hi
i want to remove a ppp active user with api in c#
i test this command in terminal and this worked Exactly

ppp active remove [find name=ppp1]
ppp1 is a username

but in c# i cant send a user name or with paramert !
mikrotik.Send(“/ppp/active”);
mikrotik.Send(“=remove=[find name=ppp1]”, true);
not worked

mikrotik.Send(“/ppp/active/remove”);
mikrotik.Send(“=[find name=ppp1]”, true);
not worked
mikrotik.Send(“/ppp/active/remove”);
mikrotik.Send(“=0”, true);
it is not worked


Please help For this !