Does Malaysia still use the old UK system of a navigation test prior to the solo X-Ctry, or is it conducted as part of the PPL Skill Test after the solo X-Ctry?
I suspect it may be the former, in which case the examiner is concerned with determining that you have a logical method of navigation and fuel planning and that you won't get lost or infringe airspace. You must also apply common sense and demonstrate good decision making throughout. If it is the latter, it is simply an independent check of something you have already done before.