Screen for "Add Sub-Task" in GH

If we create sub-Tasks in Jira we have a lot of custom-fields on the create-Screen. (Screenshot 1)
In Greenhopper we have the possibility to select "add-Sub-Task" (2), but in this create-Screen not all custom-Fields are available (3)

Is it possible to add this fields to a GH "Create-Sub-Task" Screen