How to create a field in calendar folder for all users.

I have create a custom add-in on my machine that uses a field I have create in the Calendar folder.  Is there a way to create this field in everyone's folder without doing it manually.  I prefer to not have to touch 200 machines.
Thanks
rkanterAsked:
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David LeeCommented:
Modify the add-in to check for the existence of the field.  If it doesn't exist, add it.  Something like this:

    Set olkUserProperty = Item.UserProperties.Find("YourPropName")
    If TypeName(olkUserProperty) = "Nothing" Then
        Set olkUserProperty = Item.UserProperties.Add("YourPropName", olText)
    End If
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rkanterAuthor Commented:
It didn't work.  I am probably doing something wrong.  Basically, I am trying to add a field to the calendar folder called 'ControlNumber" if it does not already exist.
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rkanterAuthor Commented:
One other comemnt. When I debug the code, as soon as it tries to execute the .find it exist the function without any error.  Just to make sure, I add the On error Goto 0 right before it, without any luch
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David LeeCommented:
Folder's don't have user-defined fields.  Only the items in a folder have them.  New items in a folder will have whatever fields exist in the default form set for that folder.  The lone exception is if the new item is created based on a different form.  If the form an item is based on does not have the new field, then you can add that field to each item in the folder via code like that I posted above.  Are you sure you're talking about adding an item to a folder?  Might you be talking about adding the item to a view?  As to the code exiting without an error, I can't imagine how that's possible.  I'm not doubting that's what happened, but I can't think of how it could happen.  If the object loaded into Item doesn't have a UserProperties collection, then there should be an error.  Something like the object not supporting that property.  If Item does have a UserProperties collection, then then next line of code should execute.
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