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 bpmn file as : ${XmlToXml1.get(1)} NB: we will make examples on the same connector "XmlToXml1".
     getTrkValues	Return the Tracking values from a BpmnFile.