Data bound property for PowerBI custom Matrix Visual

I am creating a powerBI custom visual (dataViewMapping of Matrix type) and everything works well except the databound property.
I have a question pertaining to associating data bound property to the objects in my PowerBI custom visual, which use dataViewMapping of Matrix type.
I am unable to link the databound property to the objects to save and retrieve its value, as dataViewObjects remain undefined.

In my case I want to control the bold formatting of each row in the matrix individually. I do get the control for each row, but it is unable to hold/associate the value. It flickers back to it original position and there's no change in the object or row property.
Also, when I am trying to use selector for the datapoint identity (matrix row label in my case), i get the selector of metadata type (for e.g. {metadata:<row label>}), whereas I expect the selector to use matrix visual.  I am using "withMeasure" method in

Please let me know what I may be doing wrong here. Happy to discuss more about it.
Thanks in advance!