IF the field data types in textbox and combo bound column are the same it can work with multiple columns so that is not the problem. Let's say bound combo and textbox fields are numeric and you dblclick textbox when it has a value of 3. You will put whatever is in the first visible column that matches the PK field that the combo is bound to (e.g. combo is bound to employee table, PK of 3 matches 12345 employee number, employee number is 1st visible column, combo will now show value of 12345. If that's what you want, it can work. However, it is unlikely that you know the value of the PK field, especially if it is an autonumber. Even if you did, 3 is the value you want to set in the combo, not 12345 so IMO the idea is impractical because the only data that can be retrieved/inserted from/into a bound combo is in the bound field. It doesn't matter what you see that you've selected from the list if it's different.
Populating fields in opened forms is doable so it may just be that you need to run code when you open subsequent forms (and the 1st one is still open) and get the values that way.
Last edited by Micron; 04-01-2022 at 02:08 PM.
Reason: clarification
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.