modbus register address

hi guys

i am using my Schneider m221 plc  but

facing this below problem.

how can write modbus address  i am trying below register data address but not accept this register data  address example i write

%MW0:=16#10001

%MW1:=16#10002

%MW2:=16#10003

%MW3:=16#10004

so guys how can write this register address can me  share one example so i understand. also share read var setting .

ObjType:

FristObj:

Quantity:

IndexData:

Thanks