Send Flexi Task Notification to Selected Person According to List Choice Value

[cabeza]

My workflow is working fine to assign the flexi fast to a SharePoint group,
Now members in this group are increased and not all of them should receive the same request.
There is a choice column in the list for the user to select to send the request to which department (Dept1, Dept2, Dept3,...).
I want to query this department from the submitted form, and accordingly to send the notification to the group belongs to this department.
I was thinking to:
1- Create a list with two columns, "Department" and "Email to", [email to will be a SharePoint group]
2- Query the department name, get its assigned group and assign it to a workflow variable. varMailTo
3- Send the flexi task to that variable.
I tried the same but could not get the group name, I think I missed something in step 2 or you may advise to a better solution
Many thanks

[emha]

could you post a screenshot how have you configured the Query action?

some sample data from the list would be helpful as well.

describe what are datatypes of involved list fields and variables

[cabeza · Accepted solution]

thank you Emha, 

 i added a "Log In History" Action to read the group name before sending the email, and found out somemistying is there, it wokks find now