ComboBox default value sticking between records

[Ath1]

I am trying to create an app from a SQL data source, I have a browse gallery leading to another screen with a combo box on it. 

I need the combo box to display the value in the SQL table or nothing if the value is null. 

The problem is when I use the app and change the combo box on one record and submit the form and then go into another record, the default selected value is the value from the previous record, not the value from the table. My combo box is set to submit the form in the on change property ( I need it like this to hide and unhide other boxes) so as soon as I open a new record it immediately puts the stuck value into the table which is causing all sorts of issues. 

I have also tried this on a dropdown but that still has the same problem.

Any help would be much appreciated! 

[BCBuizer]

Hi @Ath1 ,

Perhaps it's worth trying to reset the ComboBox when changing records.

Can you share the Items and DefaultSelecteditems of your combobox?

[Ath1]

Hi @BCBuizer!

I did try and use Reset(MyCombobox) in the on visible property of the screen  but I get an error saying "the reset function can only be used with a resettable control"

In Items I have my lookup table (the column is in the display and search fields) and in default selected items I have "Filter(MyLookupTable.MyLookupField, MyLookupField = ThisItem.MyField)" 

Something I have noticed is that it doesn't stick all the time but it seems to be random as to when it does happen, it needs to be more reliable than it is.