>I can't get the data I enter in the combo box to go back into the table.

Whats happening is, you are refreshing the control to reflect is ControlSOurce BEFORE you actually commit the change to its ControlSource. So it keeps being reverted to blank. WHat Cetin suggested should help, you just have to set the Value BEFORE refreshing the control:

this.Value = this.Value
thisform.Refresh()