hi all, is there a good way to reassign other's task(already accepted b

We have done a similar thing using 'Actions'- build a small process using the task reassignment smart service that Eduardo was alluding to.
To achieve your requirement via records - you can build a process model which will take as input - a list of task id's and the new task owner name and invoke it via a related action.
It is not possible to do the same from reports since there is no 'function' equivalent of the 'Reassign Smart Service'. However it is easy to do the same if you download the code for the reassign service, change it to an function and then call it from the reports( Will need to do everything in SAIL)

We have done a similar thing using 'Actions'- build a small process using the task reassignment smart service that Eduardo was alluding to.
To achieve your requirement via records - you can build a process model which will take as input - a list of task id's and the new task owner name and invoke it via a related action.
It is not possible to do the same from reports since there is no 'function' equivalent of the 'Reassign Smart Service'. However it is easy to do the same if you download the code for the reassign service, change it to an function and then call it from the reports( Will need to do everything in SAIL)