I was going through this tutorial on Gazebo-classic & wasn't able to understand this section.

I thought the section meant that: by editing the package.xml in the shown way (and sourcing the setup.bash of the catkinws containing the MYROBOTdescription package), the GAZEBOMODELPATH env variable will be set automatically instead of having to set it manually.

But when I edited the package.xml in the shown way & did catkinmake & sourced the setup.bash, the GAZEBOMODEL_PATH env variable is still not set.

Can anyone please explain this? Thanks!

P.S: I'm using ROS Noetic.