Changing a Tmp Table's field labels dynamically


I’m new to Axapta programming and would like to do the following :

  1. In a form method to dynamically change all the field labels of a tmp table used as the form’s data source .

  2. Change the value of an unbound stringedit control in group1 after a double click on a stringedit control in a grid control in group2.

Any help will do.