UI5 data manipulation

Hi experts,

I have a scenario wherein I am getting a list of data that I can display in the table or list (get_entityset from oData Service). Instead of displaying it in the list or table, the requirement is to display the items as comma separated. For example:

List_Item1

List_item2

List_item3

to

List_Item1,List_item2,List_item3

I am doing the call for the item dynamically in the binding change function of detail screen(master-detail fiori app). Since the call happens after the function gets over I cannot fetch the data and convert it into the comma separated desired format.

How is it that can be done?

Thanks