script inserting PIO in wall

[Pi_]

I'm trying to write a script that inserts PIO in a wall. (the PIO is a kind of label, that I now add manualy)

I tried 3 different approaches, none of them works...:

* AddSymToWall/AddSymToWallEdge, doesn't seem to work

* labelh:=CreateCustomObjectN(labelnaam,pX,pY,0,False);

ok:=SetParent(labelh,h);

or

* labelh:=CreateCustomObjectN(labelnaam,pX,pY,0,False);

labelh:=CreateDuplicateObject(labelh,h);

Is it possible?