Your assumption about net assets is correct. Better to present it that way kasi yun required nila . Let them decide. Kasi they will see how much your cash currently. Your liability can be long term that doesn't need to be settled now. So your still capable to survive with the current funds you have even you have liability. Their concern, IMHO, is are you gonna survive in NT until you get employed? If yes how.. Show the funds. Kaya din need employability kasi their concern is makak work kaba agad pag dating or maging pabigat lang sa government. If yes show employability proof.. Try mo i view yung pano nila I assess case mo, its not just providing kasi what's required, at least understand why they require it, from there, better proof and supporting docs ma provide mo.
In short provide mo net asset, provide proof din na utang mo is not payable on demand but on a long term basis. So you can still use the funds currently. If its other way around that is a different story..