perforce login problem

My teamcity host is in Ubuntu linuxer server.
I use perforce and ticked-based login scheme.
there is some strange problem to me.
I set up VCS. when i do 'Test Connection' , it is ok.
- i checked 'Use ticket-based authentication'
- leave the password fileld blank .
- I already got p4ticket using p4 login command.
but i run the build, Teamcity complains and the log is like this.

VCS root: StableScript, due to error: Login failed: password is incorrect

how do i solve this problem?