Managed Metadata dropdown display with PATCH

[OrangeJuice1]

Hi,
I have a managed metadata column in SharePoint and have connected this to a dropdown.
Choices([@DocumentNumberRequest].'Document Type')
All renders but it displays as:
TERM | GUID
I am using PATCH set on the submit button to update the list.
'Document Type': docType.Selected,
All works.

I now want to hide the GUID in the dropdown, so I change the dropdown to:
Choices([@DocumentNumberRequest].'Document Type').Label - This removed the GUID leaving the term. All good, but the PATCH is now not working. The patch requires in the form 'TERM |GUID'. Is there an easy way to fix?
Thanks

[OrangeJuice1 · Accepted solution]

Found answer. needed to select in properties!

[v-yujincui-msft]

Hi @OrangeJuice1 ,

Glad to see your problem has been solved, maybe you could consider marking your answer as a 'Solution' so that it will be useful for others and close the case. 

Cheers!

Best Regards,
Charlie Choi