Myrmecophilas might make new growth from any node. I think it would be nearly impossible to grow Den. aggregatum mounted unless in an extremely wet greenhouse.
__________________ May the bridges I've burned light my way.
Den aggregatum actually grows for me better mounted than potted. It doesn't bloom reliably, but that's another story. (It does want some cold in winter along with dryness, I've tried many variations, it lives up to is nickname "Den. aggrevatum") The OP is in Indonesia, I suspect that humidity isn't a problem.