livetable macro loading data issue

I have a space named Exercise04 and a class created in this space names OrganizationClass with 3 fields (name, contact, address).
I have created 2 objects of the type OrganizationClass and they are named Tool and Muse.
When i try to use a Live Table Macro in order to display these elements i do not get anything, which means the elements are not loaded in the page, even though they exist.

The code I use is this

#set($columns = ["name", "address", "contact"])
#set($columnsProperties = {
"name" :

,
"address" :

,
"contact" :

})
#set($options = {
"className":"Exercise04.OrganizationClass"
})

#livetable("Organizations" $columns $columnsProperties $options)