default a calculated numeric field

Morning -

I have two issues....I am using Adobe Livecycle Designer ES4

My first issue is...I have a table that is adding rows when a button is pushed.  I want one of the columns to increase in number by 1 for each row.  I have this working BUT I want the first number to be 12, not 1.  I cannot figure out how to do this! 

My second issue is I have a few fields on the master page that I want to appear on every page.  Like Policy Number, Client name.  When I add a unit on the form, it clears these fields out.  Any ideas?

All I have for this is Sub2.instanceManager.addInstance(true) which has never cleared fields before.

Thanks for any help!  Gretchen