Moderated Libra Office Numbering


Hoping someone can help me figure out why I can't number a column.
This column says channel in A1, and I put a 0 in A2, and there's over 300
numbers that need to go in.
I copied the 0 into the clipboard and then I selected the column both from
the 0 down, and then starting in the empty cell below the 0 and down.
I go into paste special, and then into paste special...
I have numbers checked, and I select add and enter on okay.
But it keeps filling the column with zeros.
Any idea what I'm doing wrong?