Unsure what ssis package does - Instance variable

Hi,

I have a ssis package 2008 r2 that someone as created, I am unsure what the package is doing and wanted to know what would happen if I amend the table it uses to check the instances?

I will write down the steps below on what I believe it is doing:

Step 1

Clear Stage - It will run the following sql statement:

truncate table ClosedCallsToday

Step 2

Get production instances - It will run the folllowing sql statement:

select 
nz_conn.ConnectionString as NZ_CONN,
usa_conn.ConnectionString as USA_CONN
from
(select ConnectionString from TableCheck where productioninstance = 'nz') nz_conn,
(select ConnectionString from TableCheck where productioninstance = 'usa') usa_conn

It looks like it is putting te above sql into a variable as the result set has a Single Row and when I look at the Result Set it has the following:

Result Name                           Variable Name

0                                            User::NZ_Conn

1                                            User::USA_Conn

The result for sql query for step 2 appears as below, as one record but two columns:

NZ_CONN
Provider=MSDAORA.1;Data Source=nzprod9i;User ID=sa;Password=forever

USA_CONN
Provider=MSDAORA.1;Data Source=usaprod;User ID=sa;Password=forever

Step 3

Fetch calls that have been completed today NZ - It will run the folllowing sql statement using the connection NZ_Conn:

Select ID, Area
From Completed
Where date = getdate()

The results will be then be put into a table called "ClosedCallsToday" on our datawarehouse table

Step 4

Fetch calls that have been completed today USA - It will run the folllowing sql statement using the connection USA_Conn:

Select ID, Area
From Completed
Where date = getdate()

The results will be then be put into a table called "ClosedCallsToday" on our datawarehouse table

Does anyone understand what the above is doing as I'm unsure?

Thanks