Metasploit Session Opened but I Can't Use Meterpreter

i sent the file to the system and i exploited it and got the message:

meterpreter session opened (LHOST:443 ->RHOST:1211)

after that i wait for a while and then i go back to :

msf exploit(handler) >

while i'm supposed to have

meterpreter >

please help how do i fix this?