To make a variable as session variable you need to create data item with exposure type as Session - Expose the data item to Control Room.
View attachment 1561533282806.png 1-Session variable are the variable which can be changed at the run time.
2-When our processes is in run state we change the value of session variable.
3-Lets take the example when we running the two process with same session variable the session variable will be common to both processes but the values that hold by session variable we can change at run time from control room.
4-To modify the session variable we need to select the process which is running in control room select process >> view session variable >> then modify the session variable as per your requirement the values will be changed and process will behave on the current value of the session variable.
• Session Variables are specific to that instance of the Process. If two instances of the same process are running at the same time, they will both have the same Session Variables but the Session Variables will have different values.
• Session Variables need no setup in System Manager.
• Data Items exposed as Session Variables are writable.
• Session Variables can be viewed and modified from Control Room.
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