I can't seem to access the editor for the next column while adding/editing a row.  Depending on the value that is selected in the current column while being added/edited I need to change the contents of the next column.  The next column is a text editor with a dropdown that can be chosen or they can enter another value.  I always get an error that the editor I am trying to access is undefined.  It is in row edit mode.  I am on the verge of creating my own edit form but there has to be something I am missing.  Please help with what events I need to use for this and the method to access the next columns editor. 

Thank you.