Task is ignoring mstatus parameter

Task is ignoring mstatus parameter

When I try to obtain the "notcompleted" taks from bellow URL I get all tasks (completed and notcompleted)

https://projectsapi.zoho.com/portal/{PortalName}/api/private/xml/tasks

Parameters:

dispType: upcoming

flag: allflag

mstatus: notcompleted

projId: [...]

uname: all

Regards.