Run configuration: "run" and "debug" buttons are disabled

Hi guys,

I am adding Run configuration for my plugin.
So far I've done these steps:

• implemented ConfigurationType
• created MyConfigurationEditor which extends SettingsEditor
• created MyRunConfiguration that has implemented getConfigurationEditor() and getState(). Other methods return null.
• added MyConfigurationType to plugin.xml

Now when I run my plugin I am able to create new configuration but I cannot run it because both "run" and "debug" buttons are disabled.

What should be my next step to enable these buttons?