Retaining text in a click action

[veder]

I have two fields set up on a form, when the user double clicks in field 1, the text that was in Field 1 then moves to field 2. The issue is that the text in field 2 only retains the most recent text change - overwriting the text that was in field 2 previously. How do i make it so that every time the text moves to field 2, that it keeps a running history of the text?

 

[Studentos]

For example. OnDoubleClick:

Field2 = Field2 & Field1