Index: library/nx/nx.tcl
===================================================================
diff -u -r76454eeb255e395a6a19345d558e0e96a9c47159 -r8d45ee4442be4ba3222fa1abaeacd94a7aa02cc3
--- library/nx/nx.tcl	(.../nx.tcl)	(revision 76454eeb255e395a6a19345d558e0e96a9c47159)
+++ library/nx/nx.tcl	(.../nx.tcl)	(revision 8d45ee4442be4ba3222fa1abaeacd94a7aa02cc3)
@@ -1560,7 +1560,7 @@
       # In case the "assign method" has changed, forward variable
       # setting in configure (e.g. called during initialization of
       # object parameters) to the slot.
-      lappend options slot=[::nsf::self]
+      lappend options slot=[::nsf::self] invokesetter
     }
     if {[info exists :arg]} {lappend options arg=${:arg}}
     if {${:required}} {