Error running a new process instance

[yepengchen]

hi,I add a process,and config a script task.When I try to creat a instance,it run fail,and the error messages is “Error in Script”.
This is script content.

<scriptTask id="script" scriptFormat="JavaScript" flowable:autoStoreVariables="false">
    <script>
    def scriptVar = "test123"
    execution.setVariable("myVar", scriptVar)
    </script>
</scriptTask>

What is wrong with this script?

[yepengchen]

I solve this.Filling the attribute in the Corresponding box，It runs successfully.