Update a boolean property using API

[Anonymous]

How do I update a boolean property using API?

mDocSvc.UpdateFileProperties(new long[] { file.MasterId }, new long[] { propDefId }, new object[] { true });

"new object[] { true }" does not work. I've tried a cuple of alternatives using string "True", integer 1 etc., but all of them gick me an exception with error code 0 (UnspecifiedSystemException). The file does exists and in Vault Explorer I can change the property value between True and False in a dropdown combobox.

Thanks!

[Redmond.D · Accepted solution]

Error 0 can mean many things, it might not be the property value.  Have a look a this blog article for tips on how to handle the error.

[Anonymous]

Thanks! That solved my problem!

I was too focused on the boolean value, I didn't realize the file had to be checked out.