grid combo vs dhtmlxCombo

Still using v3 and still having, my problem, with cell/column combo API. I have used mygrid.getCombo() but I cant find the full API although I am using myCombo.put(x,y) and it is working. Can you clarify? tia.

Here you can find a detailed tutorial:
docs.dhtmlx.com/3.6/doku.php?id= … cell_combo