Delete Measurement not possible

i have a problem with deleting from one Measurement in my Database.
I want to delete the monthlyrain Measurement (see screen below)

When I try DROP MEASUREMENT “…” it looks all is fine. But after show measurements it still exists.

Is it possible the the both " " makes the problem in this case?
Is there any way to solve this problem :frowning:

the double quotes are the problem for sure.

you can try to escape them DROP MEASUREMENT \"nameHere\"