Scenario :

Submitted, User1, 01/11/2016
Approved, User2, 02/11/2016
Rejected, User3, 05/11/2016
Completed,User4, 05/11/2016


Set WFvar1 to Current Item:Status
Set WFvar2 to [%Variable: WFvar1%] "New Status Update Line"
Set Status to Variable:WFvar2
Set WF3 to Currentdate 

Dictionary is a new kind of variable that can be used to save multiple values during the workflow .

 Three actions specifically designed for the Dictionary SharePoint WorkFlow. 

1. Build Dictionary 
2. Count Items in a Dictionary 
3. Get an Item from a Dictionary 

Build Dictionary 

• create a variable of type Dictionary. 
•  Type of variable available in the SharePoint 2013 Workflow platform.

Count Items in a Dictionary   

• Count Items in a Dictionary action to count the variables that a Dictionary contains
•  return  Integer variable.  item count to loop through the Dictionary.

Get an Item from a Dictionary 

•  Get an Item from a Dictionary action to retrieve a variable from Dictionary
•  dictionary stored in a stand-alone variable.
• returns retrieve a value by entering the name of the variable. 

The variable types available:

• Boolean: A Yes or No value
• Date/Time: A date and time
• Dictionary: A collection of variables
• Guid: A Globally Unique Identifier (GUID)
• Integer: A whole number without decimals
• Number: A number that can contain decimals
• String: A string of characters