Hi Ezilkio89, I am no expert on this stuff, but seeing no-one has answered yet, I will start. From
Visas and Documentation - Information on working documents for expatriates in Indonesia I get
A business visa does not allow a foreigner to work or be gainfully employed in Indonesia, but only to conduct business negotiations, short term work assignments, or training assignments. If you plan to work in Indonesia for a period of time, you must have a KITAS and a proper IMTA.
So you can see the purpose of their questions was to see if you were working in Indonesia. If you think back to the conversation, you can figure out if you handled it well, given what they were after.