Initialise a group to zero members

Hello there,

I have been looking online but can’t find the answer although I think it should be rather easy… How do I set a group to ‘empty’ again, in rules? I build up some groups based on various criteria, and I now initialise it with

'''TempGroup.members.forEach[ i | TempGroup.removeMember(i)]

But there must be a better solution to that. {} or [] or null don’t work, if I am not mistaken.