Server admin help

[old.{SSA}Red-Eye]

Ok so call me thick but i can't seem to change the maps when I book BW servers.
I have tried these commands but no joy yet.
/rconpassword password changelevel mp.beach
/rconpassword password map.cfg beach.

Can you tell me where i'm going wrong.All I want to is change the maps when my clan members ask me to.

Take it easy

 

[nocte]

/rconpassword password changelevel mp_beach

or

/rcon map mp_beach

it is an _ instead of an .

hope that helps