Project: JDT
Bug 37353 add variable button can't add variable only edit. [build path}
Reported: 2003-05-07 16:48:47 | Status: resolved fixed

Project->properties->java build path->Library tab->add variable button will only allow you to extend or edit a variable not add a variable. The only way to add a classpath variable is to go Window->preferences->java->classpath variables->new button.

Files changed in fix:
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/NewVariableEntryDialog.java