District is not getting updated of the connection object...

Hi Friends,

I need to update the district of the connection object.I used the FM ISU_S_CONNOBJ_PROVIDE,ISU_S_CONNOBJ_CHANGE,ISU__O_CONNOBJ_ACTION.bt it was not updated but got a message that connection object has been changed.when I opened it in display mode then the changed value was not showing.could you please suggest me what FM should I use?

Thanks in advance..

Regards,

Mandira