Unable to get the server status on wsadmin

HI,

I am trying to get the server status using the wsadmin tool , and i get the error as mentioned below

Is there anything i am missing ,

Please help!!!!!!!

wsadmin>$AdminControl getAttribute $server state
WASX7015E: Exception running command: "$AdminControl getAttribute $server state"; exception information:
com.ibm.bsf.BSFException: error while eval'ing Jacl expression:
can't read "server": no such variable
while executing
"$AdminControl getAttribute $server state"
wsadmin>$AdminControl getAttribute $WASAppCluste state
WASX7015E: Exception running command: "$AdminControl getAttribute $WASAppCluster_prod14 state"; exception information:
com.ibm.bsf.BSFException: error while eval'ing Jacl expression:
can't read "WASAppCluster_prod14": no such variable
while executing