I am trying to insert a formula to every row, calculating sum of several cells in the same row. By the moment of automatic insertion I will only know columns, while row numbers would be variable, so I need to add something like:

[A0] = [SUM(N0:T0)]

[A1] = [SUM(N1:T1)]

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`oSheet.getCellByPosition(myCol, j).formula = "=SUM("N" & j & ":T" & j)"`

What's the right syntax?