I do it like this:
Create a public var pbKeyID
in the OnCurrent event of the form put the line:
pbKeyID = me.KeyID
create a function
function GetpbKeyID() as long
GetpbKeyID = pbKeyID
end function
create a TextBox on your form, put it under all the other fields and set it's RowSource to:
IIf([KeyID] = GetpbKeyID(), "X", "")
This will be true only for the selected record
now use ConditionalFormat to format this text box when it's value = X to whatever you wish