Introduction

 Variable is a container that holds a value and can be called in the iXPath Scenario. The importance of variables is to make flexibility in using some values without referring to their origins. 

There are 2 types of  variables:  

• System variables 
• Local variables 

To call a variable, we should put it inside ${}. Eg: for a variable named ‘iXVar’, it can be called as ${iXVar}.

System variables

System variables define some default values in the system, and they can be called by users several times. 

Here is the list of system variables : 

1. At the declaration of the scenario:
   • iXSession: it returns the ID of the current session.
   • iXSessionPath: gets the Path of the session folder. 
   • env: name of the environment.
   • inputFile: this variable collect all input files in one list.
2. For a mail listener : 
   • iXFrom: refers to the sender of the mail.
   • iXSubject: refers to the mail subject.
3. For an AS2 listener : 
   • iXFrom: return the value of the AS2 sender.
4. All connectors declare a system variable of type BpmnFile, the connector variable uses a bunch of functions to handle the list of BpmnFiles that will be detailed in the table below  :

   • Function	Description	Use
     Get	Get a file with index number "i" from the BpmnFile list, the indexes begin from 0 as the first element, and so on.	if we have an XmlToXml connector named "XmlToXml1" we can get the second BpmnFile as : ${XmlToXml1.get(1)} NB: we will make examples on the same connector "XmlToXml1".
     getTrkValues()	Return the Tracking values from a BpmnFile.	Eg : ${XmlToXml1.get(0).getTrkValues()} returns the tracking values of the first BpmnFile.
     path()	Return the absolute path of the BpmnFile.	Eg : ${XmlToXml.get(3).path()} returns the path of the fourth BpmnFile
     fileName()	Return the name of the BpmnFile.	Eg : ${XmlToXml1.get(2).fileName()} retrieves the name of the third BpmnFile.
     extension()	Returns the extension of the BpmnFile.	Eg : if we want to get the extension of the first BpmnFile, we will proceed as below :          ${XmlToXml1.get(0).extension()}
     fullName()	Returns the file name + its extension	Eg : ${XmlToXml1.get(0).fullName()} returns the full name of the BpmnFile.
     size()	Returns the size of the BpmnFile in megabit.	Eg : ${XmlToXml1.get(0).size()} returns the size of the first BpmnFile.
     type()	Returns the type of the BpmnFile	Eg : To get the type of the second BpmnFile , ${XmlToXml1.get(1).type()}

Local variables

Local variable is a type of variable that can be newly created and used for a certain need.

So as to create a local variable "newVar" with a value equals to "var number 1", we should write this piece of XSL code : 

The call of this new variable in the scnario is similar to previous system variables:  ${newVar}.

To get 'newVar' from XSL file :