Hi,
We have a Sharepoint List that has multiple columns of type Choice. For each of the columns, we have set "Can add values manually".

Now, when using a SharePoint Form to enter data, we get the following option to "Specify you own value"

Instead of the SharePoint Form, we wanted to use the integrated Power Apps Form functionality. By default, the Power Apps Form creates combobox for Choice type columns. We changed this to RadioBoxes. But, we are unable to get the "Specify your own value" option along with the box to "Enter value here".

The formula for the "Items" is - Choices([@'Gift Registry PowerAppForm'].'2.Declarations'). This returns a table without the option for "Specify your own value".
Is there any way to update the above formula to append another row. Also, how can we create a textbox to allow user to specify their own value.