Step 1 Choose Facebook- choose Add friends(Double click)--Input random task name-- Click ok
Step 2 Select account-custom the settings on the right side( eg, mutual friends number)
Search Users by kewords--Input keywords here
Step 3 Select your task-check the task--click run
Step 4 Task failed
Step 5 Select add friends task--right click --choose log
Step 6 Check log details --choose date, now we found out the reason that the task failed. (Mutual friends number i just set in Step 2 does not match )
Step 7 Go to task settings
Step 8 Edit the task (Mutual friends number 0)
Debug on (Requested)
Success