that will do the job if I will change it before I will open the form.
I want to change the subform after I opened it.
First I open it bound and use the subform records.
Sometimes as a seconed step I want it unbound and to be able to see and to use all recordset.
I open the form working_order and the subform winding_data with bounds of parent (main form) control - Power and child control (subform) - Power.
So they have the same value.
I would like to opet the bounds and to have all the records of the subfourm.
How can I do this?