Portal Row select highlight wont hold
I am using Filemaker Pro 12 Advanced v3.
I have created a portal on a table to use as the select row for a detail view of a different instance of the same table.
I have created a rectangle overaly over the row and added fill colours for hover and pressed.
I want to the selected portal row to stay with the pressed colour to show it is the selected row for the corresponding detail.
For some reason unknown to me I can not find how to effect the selected portal row colour. Data is fine and the selection works, its just the visual.
After searching help and FAQ,s I am frustrated at what I am sure is simple, just can find it