Help with =CHOOSE()

[Jean-Michel]

Hello all

Could one of you please help me with the CHOOSE function of the Spreadsheet App?

I have following values:
10 in D2
20 in D3
30 in D4

I want to get a scroll list "10 20 30"

I enter what follows in D6 (or whatever other free cell):
=CHOOSE(D6,"AA",D2 : D4)

I get "Syntax error"

While trying several syntaxes, I did manage to get the scroll list operating as wished just once, but, strangely, it collapsed once I have chosen a value with my finger.

I DID read the help menu several times but it seems I am still missing something which might be obvious for you.

Many thanks advanced and kind regards.

{EDIT: added spaces to avoid : D to be converted into a smiley}