Pathname of an associated object

[il barbi]

How can I recover the pathname of the Word files being
inserted as associated object in a field of type "OLE
object"? Namely I have inserted them by right clicking on a
frame in my mask and then selecting "insert object",
specifying that they are Word files, finding them C: and
choosing linking instead of embedding. I thought the
pathname must have coded in property "SourceDoc" but it is
empty, as well as property "Class"
il barbi