Hi I have managed an Invoice template by: 

Table1._Row1.addInstance script. 

And also I have managed a drop down menu to change local currency (time to time we need to issued invoices in different currences).

The change local command only applies to 1st row, but not the rows added by instance manager. 

I have tried to manage directly adding the script inside dropdown click to row numeric field by calculate however I receive invalid value error message while calculating.