Package name    : Persistence Variable
Iflow name      : Read_and_Write_Variable_IFlow_1
Sender http path: /Read_and_Write_Variable_IFlow_1

1) Read local variable to property while local variable not create yet.
2) Read local variable to property while local variable not create yet, with a default value (1000).
3) Write local variable with example latest constant value (1234), then read again local variable to property.
4) Write local variable with example latest value from XPath (5678), then read again local variable to property.
5) Observe the automatically created header when read from variable.
6) Try write both global variable and local variable with same name. Will it work? Why it work?
7) Try write another global variable "XYZ_Token" with example value "1q2w3e4r5t6y7u8i9o0p" 

Local variable = Last_Processed_ID
Property = EP_Last_Processed_ID
Property = EP_Latest_ID

<root>
    <ID>5678</ID>
</root>

Package name    : Persistence Variable
Iflow name      : Read_Variable_IFlow_2
Sender http path: /Read_Variable_IFlow_2

8) Read local variable Last_Processed_ID to property with default value "Not Found"
9) Read global variable XYZ_Token to property with default value "Not Found"
10) Echo back the variable read in body.

Last_Processed_ID : ${property.Last_Processed_ID}
XYZ_Token : ${property.XYZ_Token}