Post Username value on Survey Form ODK-X

I am using ODK-X (ODK Services, ODK Survey and ODK Tables).
I want to restrict options based on the configured username (from ODK Services settings). I see the column with the username is indicated as _row_owner. I tried calling this {{data._row_owner
}} but it doesn’t show any value. I also tried {{data.username}} and I still can’t get the value.
Is this possible? If it is, I will be grateful if anyone can share the syntax I can put in ODK-Survey form to get this value.

You can use the javascript interfaces to get the active user.


More information can be found here:

Thanks W_Brunette. It has worked perfectly well. Much appreciated.