Need API method call for following services in Activiti

[viswa317]

1, get all task assigned to a user

// its working.

 List<Task> tasks = taskService.createTaskQuery().taskAssignee(userId).list() ‍

2, get all task assigned to groups

//its task list empty, its not working

 List<Task> tasks =  taskService.createTaskQuery().taskCandidateGroupIn(roles).list() ‍

3, clam a task

//its working

 taskService.claim(taskId,springSecurityService.currentUser.id.toString()) ‍

4, revoke a task

// i don't know this is the right way

 taskService.claim(taskId,null) ‍

5, start process instance

//its working

 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(pdId, variables); ‍

6, complete a task

//its working

 taskService.complete(taskId,variables) ‍

7, get from properties for a task

// its not working.. its returning like [org.activiti.engine.impl.form.FormPropertyImpl@233e6b10, org.activiti.engine.impl.form.FormPropertyImpl@56e6f983]

 List<FormProperty> formList = formService.getTaskFormData(taskId).getFormProperties(); ‍

I want to make sure that i am doing in right way.. please correct if i am wrong

[jbarrez]

2.  Should work, we got tests for that. What is in 'roles' and what how does your assignment in your process looks like?
7. you probably want the variables not the properties. Use the getVariables method

The rest looks good to me.