Quality Center Modify Status of Automatic Runner via OTA

Question

A simple need in Quality Center.

Background:
In HP Quality Center -> Test Lab, you can create a testset having many testcases. You can run the testset or individual testcase by clicking on the Run (which starts Test Run Scheduler). Considering that a test script (considering Python) exists for the testcase, when Run is clicked a Automatic Runner popup is seen where you have three columns:
TestName, Run on Host, Status

I am aware of the OTA API which can be really useful to write a testscript.

My question is how can I modify the Final Status seen on the Automatic Runner via the testscript (and OTA API).

I have this requirement because when my following testscript is called, I wish to display a message - 'Testcase Finished' instead of 'Error: Failed to Post Run'. The 2nd message is displayed because my testscript purposely cancels the Run. Here is the script:

def Test_Main(Debug, CurrentTestSet, CurrentTSTest, CurrentRun):
    TDOutput.Print('Do something before cancel')
    CurrentRun.CancelRun()
    TDOutput.Print('Do something after cancel')