worldedit set block if block below is a certain block

Question

I have this farm with multiple layers that needs to change to make it compatible with 1.14.4 everywhere there is a blue ice block I want to place a layer of snow on top of it. I found the overlay command however this doesnt work as there are multiple layers in this farm. Is there an easy way to put a snow layer on top of every Blue ice block?

Answer 1

Using offset masks is the correct way to do this with WorldEdit.

If you want to replace every block above blue ice with snow, use //replace >blue_ice snow

Source: https://worldedit.enginehub.org/en/latest/usage/general/masks/#offset-mask