copying data to another workbook

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this is my code but somehow its giving me an error '438' that the object does not support property (the bold line)

and can i using it on xlsx files ? kindly help

In order for this code to work, you first have to put it in a module.
Second, you are opening it as READ ONLY so you can't change it.
Here is the code I tried and it works:

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i have made it that this takes place after he hits an update button, now i want that once he hits the update button he cannot now edit/remove the data (say a1:m100)