Web dropdown menu

Thanks 

I have changed the p to narrow down the search area. I managed to find the object but now it says There was an attempt to perform an action on a zero-sized window. 

The drop down list does not hold up, which it is very hard to map the object. That is why I used the find object method. If I map the object with the object spy, it would say the object is not under the object tree. 

Is there a way to solve this problem? 

Here is my adjusted code, 

def my_test():
# Find all enabled buttons in the Replace dialog
p = Aliases.browser.pageLogon.sectionShellSplitCanvas.frameApplicationActivitytypeMana.frameIframeid.activityTypeCat_dropdown_var
my_choice = p.Find("contentText","Manual entry, manual allocation",2,True)
if my_choice.Exists:
Log.Message("FOUND IT!")
my_choice.Click(-1,-1)
else:
Log.Message("Cannot find the menu option")