Index: propdlg.c
===================================================================
--- propdlg.c	(revision 38240)
+++ propdlg.c	(revision 38241)
@@ -602,7 +602,13 @@
 	prop_refresh((propdlg_t *)caller_data);
 }
 
+static void backann_chk_cb(void *hid_ctx, void *caller_data, rnd_hid_attribute_t *attr)
+{
+	const char *new_val = attr->val.lng ? "1" : "0";
+	rnd_conf_set(RND_CFR_DESIGN, "editor/backann_subc_attr_edit", -1, new_val, RND_POL_OVERWRITE);
+}
 
+
 static void prop_refresh(propdlg_t *ctx)
 {
 	rnd_hid_attribute_t *attr = &ctx->dlg[ctx->wtree];
@@ -820,6 +826,7 @@
 						RND_DAD_BOOL(ctx->dlg);
 							ctx->wbachk = RND_DAD_CURRENT(ctx->dlg);
 							RND_DAD_HELP(ctx->dlg, backann_help);
+							RND_DAD_CHANGE_CB(ctx->dlg, backann_chk_cb);
 						RND_DAD_LABEL(ctx->dlg, "backann");
 							RND_DAD_HELP(ctx->dlg, backann_help);
 					RND_DAD_END(ctx->dlg);