[Zope] manage_changeProperties from Python, using ZClass instance located through ZCatalog

[Milos Prudek]

m_id is tokens type property inside "data" propertysheet in a ZClass.

This Python Script works fine when called on the ZClass. It changes the
value of m_id property.

new_m_id=[777,888,999]
context.propertysheets.data.manage_changeProperties(m_id=new_m_id)

However, the following script does not change the value of m_id
property. It runs as if everything is ok. It finds correct instance
using "title", the x[0].m_id and x[0].title show correct values, but the
"line x[0].manage_changeProperties(m_id=new_m_id)" has no effect
whatsoever.

x=context.Catalog_Org(title="aaa")
print x[0].m_id
print x[0].title
new_m_id=[999,888,777]
x[0].manage_changeProperties(m_id=new_m_id)
print x[0].m_id

I tried to call
"x[0].propertysheets.data.manage_changeProperties(m_id=new_m_id)", but
it fails with Error Type: AttributeError,      Error Value: data

--
Milos Prudek