Backpack Field Type Checklist is not Showing Pivot table data on create and Edit

I want to assign permissions to users while creating or updating. So used checklist type data with the backpack permission manager. Follow is my code which I put for column type checklist.

CRUD::addColumn(
            [
                'label'     => 'Permissions',
                'type'      => 'checklist',
                'name'      => 'permissions',
                'entity'    => 'permissions',
                'attribute' => 'name',
                'model'     =>"Backpack\PermissionManager\app\Models\Permission",
                'pivot'     => true,
            ],
        );

This was working fine until I upgraded laravel backpack to v5 with backpack/pro.