if (MessageDialog.openConfirm(Display.getCurrent().getActiveShell(), Messages.getString("ConfirmDelete"), formNames.toString())) {
// remove variable from form validations
ParContentProvider.rewriteFormValidationsRemoveVariable(editor.getDefinitionFile(), nodesWithVar, variable);
// remove variable from definition
ProcessDefinitionRemoveVariablesCommand command = new ProcessDefinitionRemoveVariablesCommand();
command.setProcessDefinition(getDefinition());
command.setVariable(variable);
editor.getCommandStack().execute(command);
}
}