How do i use variables defined in the Script Task in the User Task?

[asheerabbas]

Declaring variables in Script Task through execution.setVariable and using them in the User Task.

I have declared a variable in Script Task using execution.setVariable in the activiti Designer, but when i use the same variable through the ${expression} in the usertask and i click on the submit button when the process is run it says unable to evaluate expression.

This is what i have done.

Script Task:

message = "Hello"

execution.setVariable("msg", message)

User Task

Form Properities (String):

Expression:

${msg}

Format of the script is groovy.

Please Advice

[jearles]

Asheer,

I believe when you use: execution.setVariable("msg", message), that's meant to set a Process Variables. From my understanding Activiti will not define a new variable for you if it doesn't already exist in the process, for example that "msg" value in your script. You would need to have a Process Variable named msg in order to store that information there.

Below is a GUI method for declaring a process variable:

Feel free to look into the Variables section of the User Guide for more specifics on utilization and declarations.

Hope this helps,
-JEarles

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[asheerabbas · Accepted solution]

Thankyou so much Jonathan, i will look in to the variable section. Further more i figured out another way, there is a field where you can name a variable in the form properties right under the expression field, so i gave a name over there and it worked like a charm.

[asheerabbas]

Hi Jonathan, 

I looked out for the Variable in the GUI shown above in your screenshot, but my designer doesn't show that option.

I'm currently using Activiti Explorer 5.22.

Thanks.

[jearles]

Asheer, 

My apologies - I'm glad you found your answer - but I was completely in left field in my original response.
You should be absolutely be okay using execition.setVariable() & task.setVariable() without ever defining them in the UI registries.

Glad you're back in working order
-JEarles

[asheerabbas]

Thank you for help