how does ollydbg memory breakpoint works

dunno where 2 ask, but as the topic was goin on, i thiought i could ask here...
when i set bp in olly, using the commandline plugin,
1 way is by, bpx command, but it only breaks on calls,

wot r other commands the works??
bpm doesnt work,,,,

help needed.

thanx

TDW {RES}