Combo box not allowing selection (1 Viewer)

[veraloopy]

I have an unbound form with 'AllowAdditions', 'Edits', 'Deletions' , etc. all set to YES

I have an unbound combobox on the form, enabled is set to YES and locked is set to NO. The combobox looks up a field (DemoNumber) in another table which is working great.

I want to use that value from the unbound combo box in order to open up another form and filter to that specific DemoNumber. This i have working great

The problem I have is that I cannot change my selection in the combo box, for example, I have numbers 1, 2, 3 and 4 showing but it won't let me change the value, it just defaults to '1' and links to my other form with '1' as the filter.

I have recreated the form again from scratch incase there is something I missed, but the same thing happens.

I've checked the way i'm opening the form and it's definately not read only.

Any ideas as to what else could be locking the selection in my unbound combo box?

Many thanks in advance

 

[boblarson]

Hmm, not sure. Can you upload it?

 

[veraloopy]

Hi
I've attached the database with only the unbound form and tables (had to remove several unrelated fields due to the sensitive data)

Thanks for taking a look