Printing "V" in aperture photometry tool

[hilays79]

I would like to print V=4.65347e6 s my output the script. I used the script shown in the image, unfortunately it did not print the value desired. To open the second window as shown in the image I used Tools->Aperture Photometry. I selected a particular area in the camera window and exposed to have that value of V. Can someone help me write a script that does this?