Task list taskflow filtering possibility ?

Once you create the "Process workspace" (SOA integration) in webcenter, there are some new taskflows available in Spaces. One of them is the Task List which is actually the same taskflow in Worklist application from SOA.This taskflow can receive a list of parameters like : Assignment Filter, Attributes Filter List, View Filter etc (you can see all of them on composer).

Do you know wheater there is a possiblity to filter the tasks shown in this taskflow creating a filter on payload data and specifing this filter using these attributes of the Task List taskflow ?  

Thanks in advance.