Report of Foreign Assets (formerly OAR) and investment on margin

Hi all. My portfolio (just a US ETF and a handful of individual US stocks in IBKR LLC) has done well enough this year that it seems like I will need to complete the RFA (formerly OAR) report next year for the first time. My question is about what this will look like, given that I am using a small amount of margin.

To use some hypothetical numbers: if I am holding ¥70M worth of ETFs/stocks, and my margin loan is ¥10M, do I report ¥70M (the total value of the ETF/stocks) or ¥60M (the value of the portfolio)?

Thanks in advance for any advice!