Add an item to a thing's list, input change, search box, autobinding

Dear Bubblers,

For the following problem I am getting blue expressions everywhere and the debugger says it’s running fine, but I am not seeing the addition in the dB.

I have a datatype Contacts with a field ownedProperties which is a list of the datatype Property’s.

On the Property page I have an input search box labelled Property Owner. This saves to the dB fine.

What I want is for the Current Property to be added to that Contact’s list of ownedProperties.

I have set a workflow to rigger when there is a change to this input - I thought my expression would have nailed it, matching the ID’s, but no dice.

See my screenshots…

What am I doing wrong?

Screen Shot 2021-01-30 at 22.06.17 Screen Shot 2021-01-30 at 22.12.13