How to reset shell set on sysadmin

Hi all

I accidentally set sysadmin’s shell as something I made. Now I cant change anything. Is there any solution except reinstalling webmethods.

Any help is appreciated

login to MWS which the below URL :
http://hostname:port/folder.admin.dashboard with sysadmi credentials.

Go to User Interface --> Manage Shell Rules --> Sys Admin --> Change the Result Drop down to “Power Drill Shell”