variable inside Additional data sources expressions in generate document task

[marwen]

Hello All,

I am trying to insert a variable inside Additional data sources expressions in the following way:

${transdataService.getData("DocName",${taskid})}

taskid is a variable. 

although this worked for me :

${transdataService.getData("DocName","55821")}

what is the correct way to put that variable taskid.

Regards.