Can i add multiple dbs of READ and/or WRITE in this plugin?

add_db_server(‘global’, ‘dc2’, 1, 0, ‘’,’′, ‘wp_global’, ‘user’,’password’:wink:;

add_db_server(‘global’, ‘dc2’, 2, 0, ‘’,’′, ‘wp_global’, ‘user’,’password’:wink:;

add_db_server(‘global’, ‘dc2’, 3, 0, ‘’,’′, ‘wp_global’, ‘user’,’password’:wink:;

by the way, only the first one works. e.g. is the only one having all the connection. i would like all three to be read only if possible.

how can i get it done?