Populate form from standalone SDE table

I have spatial manhole data and a standalone table of manhole inspection data that are both in SDE. They have a common field of ManholeID.

I have one workflow that allows the user to select a manhole and fill in a form that writes to the standalone inspection data table. Works great.

I have a second workflow that contains a form that I would like to populate using data from the standalone inspection data table.

I'm not sure what kind of query is necessary to link the users selection back to the standalone table.

So the user selects a manhole and a  form appears that, using Runtime Modifications, has populated fields based on the standalone table.

What do I need to do to link the spatial select back to the standalone table?

Do I then need to create a FeatureSet to be able to assign the data to the form, so I can get something like this in an Assign:

To = form.Find(of ComboBoxFormItem)("ComboBox1").SelectedValue

Value = ManholeTableFeatureSet.Features(0).Attributes("CoverType").ToString()