How to count number in block?

I generate a block and ı want to use it whenever I want. But the important part is that, ı want to spare a small part in the block and when ı uses the one of the block the small part is count the number. For example,when ı use first time in this block, Autocad write  1 in the small part. And the second one Autocad write 2 in the small part. and go on. Is this possible? How can I do this?

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