I have a subform that has details from a form. Within the subform for each line item I have a checkbox "CB1". I also have a text box "TB1 within the same subform that manual text entries are made unless the check box "CB1" is checked. When checked it needs to pull data from a second text box "TB2" within the same subform or from the main forms text box "TB3". (If there is data in "TB3" then it populate each entry of "TB2" within the subform. This part works fine.) So how do I get "TB1" to populate when "CB1" is checked and remain editable?