Eclipse Maven - Change Default version

1. Add your external maven
2. Change that version while run -> install configurations

Grails Debugging Enable Intelj Idea

Step 1:-
Add in config.groovy

plugin.platformCore.events.catchFlushExceptions = true

Step 2:-
Add in buildconfig.groovy

grails.project.fork = [
        test: false,
        run: false
]


That's It, 
 Just run in debug mode..  [ click debug button, instead of run button/from menu]