Combining two Format Codes: hiding values AND displaying negative as positive

Hello! I'm making a column chart in Excel. It has both negative and positive values, from -20 to 20. I would like two things in my axis. I know how to do them separately, but is there any way to combine them?

Firstly I want the negative values to display as positive but still BE negative. This is how i managed it:

Axis options -> number -> format code: #,##0;#,##0 (Works well, only problem is it now shows all numbers with a decimal)

Secondly I want to hide the numbers 20 and -20. This is how i managed it:

Axis options -> number -> format code: [=20]"";[=-20]"";Standard

How would I combine these two? Thanks!!

Edit: I am using Microsoft 365, version 2603