Issue when I map Powerapps dropdown/combo box to Oracle Varchar column
I have a PowerApps application and data is being stored in a SharePoint online list. Due to SharePoint online limitations we are trying to move the application to the Oracle database. So created connection and updated mappings for all controls and now they are pointing to Oracle table. But the problem is Choice fields in SharePoint are now varchar columns in Oracle Table and I am getting issue when I am trying to map varchar column to dropdown/combo box(VALUES ARE HARD CODED) in PowerApps application.
My question is how to map the dropdown box to the Oracle Varchar column?
When I select value from dropdown and submit the record, it should save to varchar column and when I select the record in gallery, the value stored in varchar should be selected in dropdown field.
Followed this video but CustomerID from main table is not showing up in lookup formula. Tried ThisItem.CustomerID but giving error.