Thanks rorya,
It´s a step further. i have modified the code like this:
Unfortunately, this has a second unwanted effect. My ComboBoxes are dependent on each other...And now it happens that the second "child" Combo can display entries independiently from the Combo "parent". In the screenshot below, the Combo parent displays no entries, but the Com child displays independiently a set of values assigned to the first entry in the Combo parents...this shouldnt happen, since the first entry in the Combo parent was not previously selected:
25.05c.png
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