We have two dropdown lists. One is conditional among them, when we select values in these two dropdown lists ,we are storing the values together in other column. When we select the next values in the dropdown lists ,it is overwriting the value in other column.
We want to retain the old value and append a new value to it in the other column.
You haven't gotten any replies. I strongly suspect it's because your request isn't clear. You could help us help you if you were to provide examples of what your two dropdown lists are, and what the result is that you're seeking.