hi -hans-
thanks for you brilliant idea...
now, i have tried like this...
pg = app.activeDocument.pages.item(0);
var myObj = app.libraries[0].assets[0].placeAsset(app.documents[0])[0];
app.select(myObj);
app.selection[0].move (app.activeDocument.pages[0]);
( it would be appreciate, if i get idea for delesecting the previous selected items and then select the corrently placed one).
thanks - hans-